ColorAnt | Measure

Measure

Measure test charts

Measure Tool

The Measure Tool is ColorLogic’s own tool for measuring test charts and spot colors. It can be opened in ColorAnt by selecting Measure in the Sidebar.

 

Measuring with the Measure Tool

Selection

Select your device and connect it to the Measure Tool by clicking Connect.

Note: If a measuring device is not recognized or does not work properly, make sure that no other software or service is accessing the device in the background.

Other applications that support measurement devices may be connected to them by default. This is because the connection application (e.g., X-Rites i1Profiler Tray) is started by default at system startup and runs continuously in the background. So, when these applications are running, the Measure Tool may not be able to detect and connect to the measurement device. The solution is to launch the Activity Monitor (on macOS) or Task Manager (on Windows) and close the connection application (see screenshot).
In addition, devices must not have an existing Bluetooth connection, otherwise they will not be recognized and cannot be connected to the Measure Tool.

Light bulb icon: The Light bulb icon is shown when an instrument (such as the X-Rite i1Pro or the Konica Minolta FD-7) supports the Ambient Light Measurement mode. Clicking on this icon will switch between Ambient Light Measurement and the standard Reflectance Measurement. The mode can also be switched in the file menu Measure Mode. More information can be found in the chapter Ambient Light Measuring in Measure Tool below.

Info

Shows the current device information (if the selected device was found, version number and if the built-in filter is active).

Options

Direction: Specifies how the chart is measured. Depending on the selected device, single field measurements or strip measurements in horizontal or vertical direction are available.

Evaluation: Allows you to compare the measured data with a profile of your choice. Click on the Gear icon and select the comparison profile from the list of profiles available on the system. All patches with a DeltaE deviation higher than 20 are highlighted in red on the chart. By default, evaluation is disabled.

Note: The Evaluation can be deactivated by selecting the first entry Deactivated in the profile selection.

Opening charts

Charts can be opened via the File menu via the Recently used files and Predefined Charts entries. You can add your own charts to the list by placing them in the ColorAnt Wedges folder (User\Documents\ColorAnt\Wedges).  The menu entry Open chart directory takes you directly to the Wedges folder.
Alternatively, simply load a reference file or drag it onto the window.

Note: The Measure Tool and ColorAnt can be used in parallel. Additional files can be sent from ColorAnt to the Measure Tool while it is running. These files are added to the Reference list.

When measurement data is found in the loaded data, the user has the option to either use this data for remeasurement or to delete the measurement data and use the reference data for a new measurement.

Chart display area

The chart display area shows the selected chart with row and column numbers.

The next patch or row to be measured is highlighted by a yellow frame. If Evaluation is turned on, measured patches with a high DeltaE variance are marked in red.

Show reference data (accessible under View in menu bar): Allows a split view of the patches. One half shows the reference color value, the other the measured color value.

Fit to width (accessible under View in menu bar): The chart expands to the width of the window. For larger charts, a scroll bar appears on the right.

Add measurement: Manually adds completed measurements to the Measurements list. Usually, completed measurements are automatically added to the list. However, for re-measurements the data must be added manually to the Measurements list using the Add measurement button.

Measurements: Opens a list with all measurements of the current measuring session. The chart selected in the list is shown in the Measure Tool main window. More details about the Measurements window are available below.

Transfer and exit: Transfers all data to the Data Sets section in ColorAnt’s Main Window and closes the Measure Tool.

Reference: Lists all reference files added to the Measure Tool in the current session.

Info icon: Hover the mouse pointer over the icon to display information about the chart, such as the name of the reference, the number of patches, rows and columns of the chart. This information is useful for some devices, for example, to set them up quickly and easily.

Patch information: When hovering the mouse over a color patch, information about the respective patch is displayed, such as the patch number, the color space including reference values and measured values. When comparing with a profile, information about the DeltaE deviation is also displayed.

Show: Select the measurement condition to be displayed. Only available for datasets containing multiple measurement conditions.

Delete icon: Deletes all data measured so far and displays the chart with the reference values.

Notification messages: On the left below the display area you will see various notes and messages about the current measurement. For example, when measuring charts, there may be instructions about changing charts, or a message indicating a questionable measurement in a row (e.g., when the wrong row has been measured).

Help icon: The help icon on the bottom right takes you to ColorAnts Online Help with a single click.

Measurements window:

Date: Shows the date and time of the chart measurement.

Content: The name of the measured chart.

All: Selects all entries.

None: De-selects all entries.

Invert: Inverts the selection.

Back: Returns to the Measure Tool.

Trash can icon: Deletes selected measurements.

Transfer: Transfers the selected data to ColorAnt’s Data Sets section and returns to the Measure Tool.

Transfer and Quit: Transfers the selected data to ColorAnt’s Data Sets section and closes the Measure Tool.

General Information on measurement conditions

The ISO-Norm 13655:2009 defines the various measuring conditions M0, M1, M2 and M3.

M0: Does not define a specific light source but recommends illuminant A. This illuminant represents domestic lighting with tungsten filament at a colour temperature of approximately 2856 Kelvin. The UV content of the light is not precisely defined. Consequently, according to ISO 13655, M0 is unsuitable if the paper fluoresces or if measurement data must be exchanged between locations.

M1: If the substrate contains optical brighteners, this measuring condition minimizes the fluctuations of the measuring results between different devices. D50 must be used as illuminant, i.e. a daylight simulation with a colour temperature of 5003 Kelvin. The radiation intensities of the wavelengths are precisely defined, even those below 400 nm, since these wavelengths excite fluorescence.

M2, also known as “UV-cut”: Applies only radiation energy above 400 nm wavelength to the sample, either through a filter advanced to the optics of the measuring instrument, or computationally. This ensures that fluorescence has no influence on the measurement results.

M3: A polarizing filter is placed in front of the lens of the measuring instrument to suppress the effects of gloss effects on measurement data. Otherwise, the same requirements apply as for measurement condition M2.

Ambient Light Measuring in Measure Tool

The Measure Mode (in the menu bar) allows selecting either the Ambient Light Measurement mode (only for supported devices) or the standard Reflectance Measurement mode.

If an instrument such as X-Rite i1Pro and Konica Minolta FD-7 supports both modes a light bulb button is shown in the user interface next to the instrument chooser. Clicking on this bulb button will switch between the modes. Alternatively users can switch the mode in the file menu Measure Mode.

The Ambient Light Measurement mode allows measuring the spectral radiation of a light source as a single color patch.

To measure, follow the instructions for the instrument calibration and preparation. An ambient light head must be placed on the instrument to measure the light source accordingly (see instruments manual). Depending on the instrument you may use the button on the instrument to measure or click the Measure button in Measure Tool.

Once the measuring is finished the Luminance, Temperature (in Kelvin), Spectral and XYZ values are shown. If you wish to transmit the current measurement to ColorAnt click the Transmit button.

Ambient light measurements are called Emission in the CIE Data Sets column in ColorAnt. They can be used in the CIE Conversion tool in ColorAnt or in the Viewing Condition section in CoPrAs printer profiling module.

Instruments with Setup Wizards

All supported instruments with Setup Wizards (e.g. the i1iO, Konica Minolta FD-9 and the Barbieri devices) can automatically import the Scan Options (chart size, Rows per page, Gap Size) from the reference file if available. Since these values no longer have to be entered manually, a major source of error during setup and subsequent measurement is eliminated. However, the Scan Options are ONLY stored in the reference file if it was created with the Export Chart tool of ColorAnt 5 (and higher). If this information is not contained in the reference file, it must – as before – be entered manually.

Measuring multiple charts

Multiple charts can be measured in a single session (without closing/opening the Measure Tool after each measurement). Measured charts are automatically added to the Measurements list. The number in brackets indicates the number of measurements. A previously measured chart can be added to this list by using Add measurement which is only enabled when a complete measurement data set is available. Clicking on Measurements opens the list containing all measurements.

If a device with a wizard (positioning) is used (e.g., the X-Rite i1iO) the next measurement can be started by clicking on the Gears icon to enter the wizard/device settings. By clicking the Transfer and Quit button the data is directly sent to ColorAnt’s Data Sets section and the Measure Tool is closed.

Remeasure faulty patches/rows

Existing measurement data with erroneous measurement data can easily be corrected by simply remeasuring only the faulty parts (rows or patches) of the chart.

If you find that some patches or rows have not been measured correctly in a measurement, you do not need to remeasure the entire chart. It is sufficient to remeasure only the erroneous patches or rows.

To do this, simply load the file with the faulty measurement data and it will automatically be added to the Reference list. Basically, the existing measurement data can be retained in order to remeasure only the parts to be corrected, or the existing measurement data can be deleted in order to use only the reference data of the file for a new measurement.

To remeasure individual patches or rows of the chart, answer the QuestionRetain existing measurement data for re-measurement?” with Yes.

Note: If a file with multiple measurement conditions is loaded, select the appropriate Measurement Condition in the import dialog.

Connect the measurement device and measure only the part to be corrected – a row, a patch, or an entire page. This remeasured part will then replace the faulty part of the measurement data.

Note: By default, the first row/patch is selected, but any row or patch can be selected for reassessment. If a device supports the chosen measurement condition only in a combined multi measurement mode, the data of the selected condition will be copied into all condition slots.

Once the remeasurements are completed, the measurement data has to be added to the Measurements list using Add measurement. Select either Transfer to transmit the data to the Data Sets section and return to the Measure Tool, or select Transfer and Quit to send the data to the Data Sets section and close the Measure Tool.

Note: If the Measure Tool is opened by an application that only requests one data set/measurement (such as CoPrA or ZePrA), it will start in Single mode. In this mode it is only possible to measure a single file. Once the measurement is complete, transmit the data and quit or return to the Measure Tool:

Click Back to choose another file or remeasure and correct the data. However, in Single mode only one measured data set is shown in the Measurements window. Measuring multiple charts will always overwrite the last measurement (because only one file can be transferred).

If the data is measured with a device that supports multiple measurement conditions, the calling application will display the Import dialog, so that only one of the data sets can be selected for transfer.

Supported Devices

Barbieri


Barbieri Spectro LFP
Barbieri Spectro LFP qb
Barbieri Spectropad

Konica Minolta


Konica Minolta FD-5
Konica Minolta FD-7
Konica Minolta FD-9

MYIRO


MYIRO-1
MYIRO-9

Techkon


SpectroDens (Windows only)
SpectroJet (Windows only)

X-Rite


X-Rite eXact
X-Rite eXact2
X-Rite i1Pro 1
X-Rite i1Pro 2
X-Rite i1Pro 3
X-Rite i1iO
X-Rite iO3
X-Rite i1iSis 2/XL

Important: Please make sure to install the latest device driver from the manufacturer, as missing or faulty drivers may cause problems. Some devices require Visual C++ Redistributable. Verify that the version required for your device is installed.

Virtual Devices

ColorAnt’s Measure Tool includes three Virtual Devices, the Virtual Device (manual), Virtual Device (spectral) and the Virtual Device (printer). The Virtual Device (spectral) is used for demonstration purposes. The Virtual Device (manual) allows you to manually enter Lab values for selected patches. For example, this is helpful if the device that measured the values is not connected to the Measure Tool or if an older device is used that only displays the measured values on the device itself.
With the Virtual Device (printer) a typical offset printing behaviour can be simulated for test purposes.

Virtual Device (spectral)

Measurements using the Virtual Device (spectral)

Step 1: Select the device from the drop-down list Selection.

Step 2: Click on Connect.

Options: Are available once the Virtual Device is connected. Select the Direction of the scan.

Condition: M0, M1, M2, M3.

Step 3: Start a measurement by double-clicking on the first patch of the first row.

Step 4: When the measurement is complete, click on the Transfer icon to transfer all measurement data and return to the calling application (ColorAnt, CoPrA or ZePrA).

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

Note: The Virtual Device is for test purposes only and will simulate the same stored spectral data each time.

Virtual Device (manual)

Measurements using the Virtual Device (manual)

Step 1: Select the device from the drop-down list Selection.

Step 2: Click on Connect, a dialog with an input field for the Lab values appears.

Condition: M0, M1, M2

Step 3: Enter the appropriate Lab values and either press the enter key on your keyboard or click the Next button to select the next patch automatically. All required lab values can be entered in a single session.

Step 4: Once editing is complete, click the Close button to finalize the manual measurement process.

Step 5: When the measurement is complete, click on the Transfer icon to transfer all measurement data and return to the calling application (ColorAnt, CoPrA or ZePrA).

Virtual Device (printer)

Measurements using the Virtual Device (printer)

Step 1: Select the device from the drop-down list Selection.

Step 2: Click on Connect.

Condition: M0, M1, M2, M0/M1/M2.

Options: Are available once the Virtual Device is connected. Select the Direction of the scan.

Step 3: Start a measurement by double-clicking on the first patch of the first row.

Step 4: When the measurement is complete, click on the Transfer icon to transfer all measurement data and return to the calling application (ColorAnt, CoPrA or ZePrA).

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

Note: The virtual device is for test purposes only and simulates a typical offset printing behavior with always the same stored data.

MYIRO

MYIRO-1

Measuring with the MYIRO-1

Calibration

Step 1: Select the device from the Selection drop-down.

Step 2: Click Connect.

Step 3: Make sure that the white reference head is mounted and click OK.

Condition: Measurements are always carried out with the combined conditions M0/M1/M2. All available measuring conditions are always measured in a single step.

Measure

Step 1: Select the device from the Selection drop-down and perform the white calibration.

Step 2: Under Options > Direction, select how you would like to measure the test chart. For measurements with the ruler we recommend the option Scan complete rows.

Step 3: Place the instrument in front of the first patch of the row to be measured and press the measure button on the instrument. Keep the button pressed while moving the instrument across the strip and beyond the last patch. Release the button when done.

Step 4: The data is transferred to the Measure Tool. Continue with the next row.

Step 5: Once the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

ColorAnt allows the transmission of individual or all available measurement conditions. In the latter case, several data sets are transmitted. For easy differentiation, the measurement condition is appended to the file name of each data set.

Ambient Light Measuring

Ambient light measurements can be performed either using the Measure Tool 4.0 or from within the CIE Conversion tool.

Note: Requires the separately available ambient light head for the MYIRO-1.

Measure Tool: Select the Ambient Light Measurement mode from the menu Measure Mode or click on the light bulb icon next to the Selection drop-down menu.

CIE Conversion: Select Emission (Measure) from the drop-down list Illumination. This will open the Measure Tool.

Step 1: Select the device from the Selection drop-down list in the Device tab and perform the white calibration as described above. After calibration, confirm the message Please prepare the device for ambient light measuring.

Step 2: Attach the ambient light head to the device.

Step 3: Click on Measure.

Step 4: Transfer the measured data to ColorAnt by clicking Transmit.

The measured values will be displayed either in the panel Data Sets (when using the Measure Tool directly) or in the CIE conversion tool.

Step 5 (CIE conversion only): Click on Start. The data of the ambient light measurement are used to convert the selected spectral data to the new viewing condition.

MYIRO-9

Measuring with the MYIRO-9

Step 1: Select the MYIRO-9 from the Selection drop-down list in the Device tab.

Step 2: Click on Connect.

Using the MYIRO-9 over the network

The MYIRO-9 can be connected to the local area network via Ethernet, which allows direct transfer of measurement data to computers on the same LAN/WLAN.

Configure the network settings on the instrument according to the MYIRO-9 user manual.

In the ColorAnt Measure Tool, select the MYIRO-9, click on the network icon and enter the IP address of the MYIRO-9 in the address field. Click OK to establish the connection.

Note: A USB connection always has priority. If the device is to be used via LAN/WLAN, disconnect the USB cable.

Device options

Once the device is connected, the Setup Wizard opens:

Settings

Measurement condition: M0, M1, M2, M3.

Rows per page: Define the number of rows on your chart. If the chart contains several pages, define the number of lines on the first page.

Number of pages: Automatically calculates the number of pages.

Freeform: Put the chart on the table of your MYIRO-9 and the device will recognize it automatically.

Target: Requires the definition of the chart size, patches, etc., and the MYIRO-9 will search the page for a chart that fits the parameters.

Measure

Step 1: After connecting the device the Setup Wizard opens.

Step 2: Define the settings and click Start.

Step 3: The MYIRO-9 will display a message to insert the chart. Insert the chart and wait until the measurement process is completed.

Step 4: Once the measuring is complete the data will be displayed in the Measure Tool. Save the data and continue.

Barbieri Devices

Barbieri SpectroPad

Measuring with the Barbieri SpectroPad

Step 1: Select the device from the Selection drop-down list in the Device tab.
Step 2: Click Connect.

Device Options

Once the device is connected, the Barbieri Setup Wizard of the SpectroPad opens:

Chart options

Chart width: Specify the width of the chart in millimeters.
Horizontal gap: Specify the width of a patch separator.
Measurement condition: M0, M1, M2.
Aperture: Choose between Default and 6.
Once all settings have been made, you can specify in the main window under Direction how you want to measure the chart.

Measure

Step 1: After selecting and connecting the device, define the required settings and click Start.
Step 2: Start the measurement with the row marked in the window.
Note: With the SpectroPad, the charts are measured line by line from bottom to top so that the instrument does not run over the lines of the chart that are still to be measured.
Step 3: When the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

Barbieri Spectro LFP

Measuring with the Barbieri Spectro LFP

Step 1: Select the device from the Selection drop-down list in the Device tab.

Step 2: Click Connect.

Device Options

Once the device is connected, the Barbieri Setup Wizard of the LFP opens:

Type of Measurement

Choose between Remission or Transmission measurements. Be sure to use the appropriate sample holder (reflection or transmission sample holder) for the selected Type of Measurement!

Chart options

Start with page: Select the first page to be measured, e.g., when re-measuring pages.

Rows on (first) page: Enter the number of rows on the test chart page. If the test chart consists of multiple pages, enter the number of rows on the first page.
Horizontal patch gap: Specify the height of the horizontal patch separator in mm.
Vertical patch gap: Specify the height of the vertical patch separator in mm.

Measure options

Measurement condition: M0, M1, M2, M3.
Aperture: Choose between Default, 2, 6, 8 or manual.
Calibration Mode:

  1. Fast: Calibrated at the beginning of each test chart page.
  2. Accurate: Calibrates every second line.

Measure Mode:

  1. Fast (default)
    Fast measuring mode is the default mode of the Spectro LFP. In this mode the measuring head lies on the target and the
    surface is scanned.
  2. Up-Down
    In up-down mode the measuring head of the instrument moves up
    and down between each measurement. Use this mode for sensitive
    materials to avoid any scratches on the surface of the target.
  3. Contactless
    The contactless mode is similar to the above fast mode with a
    difference that the measuring head does not touch the surface
    of the target. This measuring mode is suitable for sticky and
    sensitive materials.

Note: The fast measure mode Fast (default) always uses the same amount of
light and can therefore measure dark and bright samples equally fast. However, the disadvantage is that dark samples in particular are not recorded with sufficient accuracy. The single contact measure mode Up-Down is advantageous here, because
the required amount of light can be individually adjusted for each color patch. This leads to a better differentiation, especially with dark colors.

Start: Starts the measurement of the chart.

Positioning

Use auto positioning: The Barbieri Spectro LFP has an automatic positioning feature. In this process, the camera searches for the auto-positioning lines on the test chart. Disable the checkbox to manually position the measuring head.

Manual Positioning
Use the controls for the manual positioning on the right side to position the measuring head exactly above the upper left corner using the arrow keys or by entering the x/y coordinates. The measuring head should then be positioned on the outermost corner of the marked patch.

Use the four arrows to change the position of the measuring head (left, right, up, down). The head can be raised and lowered with the double arrow in the center.

Tip: Change the position of the head with the corresponding arrow keys on your keyboard.
Steps: Specifies the distance covered by the measuring head when an arrow is clicked.

Position: Moves the measuring head to the entered x/y coordinates.

Once you are finished, click Next to specify the upper right corner of the chart.

Confirm with Next.

On the last page, enter the position of the lower right corner and confirm with Next.

Multipage test charts

Manual positioning

If the test chart has multiple pages, a message appears after measuring a page prompting to place the next page on the table:

  1. Place the next test chart page on the table.
  2. Recalibrate the table and use the manual controls as described above to indicate two corners of the chart. The third corner is calculated automatically.
  3. Click Start to measure the next page.

Important: If the second page was placed EXACTLY where the first page was, you can continue without recalibrating. The previously set coordinates will then be used again.

Automatic positioning
When auto positioning is selected:

The checkbox Use auto positioning is activated automatically.

Click Start to autoposition and measure the next page.

Important: In order to use auto positioning, the chart needs the appropriate margins and markings.

Creating charts with Barbieri gateway and measuring using ColorAnt:

To create ColorLogic charts within Barbieri Gateway’s chart generator, including the auto positioning feature, follow the procedure below:

Copy the ColorLogic charts to the user directory: Myuser>Documents>Barbieri>Gateway
Start the Barbieri Chart Generator and select the reference file from the CLReferencesBarbieri folder.

Add the desired options to the chart, e.g. auto positioning markings, reference area, etc., and Save the target file.

Load the reference file into ColorAnt by dragging and dropping the .ref file onto the Data Sets window. The target file can be found in the Gateway>Targets folder.

If the patches do not match the printed chart, right-click on the reference in the Data Sets window and select Swap Rows with Columns. Check the patch arrangement again in the View tool.

Select the reference file and  click Measure. Ensure that the correct chart has been selected. Select the Spectro LFP from the device list and click Connect.

Once the device is connected, the Spectro LFP wizard will be displayed. Simply select auto positioning and click Start.

Barbieri Spectro LFP qb

Measuring with the Barbieri Spectro LFP qb

Step 1: Select the device from the Selection drop-down list.

Step 2: Click Connect.

Once the device is connected, the Barbieri Setup Wizard of the LFP qb opens:

Type of Measurement

Choose between Remission or Transmission measurements. Be sure to use the appropriate sample holder (reflection or transmission sample holder) for the selected Type of Measurement !

Chart options

Start with page: Select the first page to be measured, e.g., when re-measuring pages.

Rows on (first) page: Enter the number of rows on the test chart page. If the test chart consists of multiple pages, enter the number of rows on the first page.
Horizontal patch gap: Specify the height of the horizontal patch separator in mm.
Vertical patch gap: Specify the height of the vertical patch separator in mm.

Measure options
Measurement condition
: M0, M1, M2, M3.
Aperture: Choose between Automatic, 2, 6 or 8.

Measure Mode:

  1. Fast (default)
    Fast measuring mode is the default mode of the Spectro LFP. In this mode the measuring head lies on the target and the
    surface is scanned.
  2. Patch by Patch (more accurate)
    In this mode the measuring head of the instrument moves up
    and down between each measurement. Use this mode for sensitive
    materials to avoid any scratches on the surface of the target.
  3. Contactless
    The contactless mode is similar to the above fast mode with a
    difference that the measuring head does not touch the surface
    of the target. This measuring mode is suitable for sticky and
    sensitive materials.

Note: The fast measure mode Fast (default) always uses the same amount of
light and can therefore measure dark and bright samples equally fast. However, the disadvantage is that dark samples in particular are not recorded with sufficient accuracy. The single contact measure mode Up-Down is advantageous here, because
the required amount of light can be individually adjusted for each color patch. This leads to a better differentiation, especially with dark colors.

Start: Starts the measurement of the chart.

Positioning

Use Auto Positioning: The Barbieri Spectro LFP qb provides three positioning options. Enable the checkbox to select one of the automatic positioning options or disable the checkbox to manually position the head.

Auto Recognition: The camera automatically recognizes the chart without the auto-position lines (requires the camera).

Auto Positioning: The camera automatically detects the chart using the auto-position lines (requires the camera).

Manual Positioning: Enter the position of the test chart corners manually.

Auto Recognition (Automatic positioning by using the camera)
Autopositioning is done by capturing an image with the camera and calculating the corner points.
Note: If the picture processing fails, the device switches to the automatic positioning where the camera is used to detect the auto-position lines and determine the corner points.

Auto Positioning (Automatic positioning by using the camera)
In automatic positioning, the camera searches for the auto-position lines. Therefore, this option requires the chart to have the necessary auto-position lines in place.

Manual Positioning
Use the controls for the manual positioning on the right side to position the measuring head exactly above the upper left corner using the arrow keys or by entering the x/y coordinates. The measuring head should then be positioned on the outermost corner of the marked patch.

Use the four arrows to change the position of the measuring head (left, right, up, down). The head can be raised and lowered with the double arrow in the center.

Tip: Change the position of the head with the corresponding arrow keys on your keyboard.
Steps: Specifies the distance covered by the measuring head when an arrow is clicked.

Position: Moves the measuring head to the entered x/y coordinates.

Once you are finished, click Next to specify the upper right corner of the chart.

Confirm with Next.

On the last page, enter the position of the lower right corner and confirm with Next.

Multipage test charts

Manual positioning

If the test chart has multiple pages, a message appears after measuring a page prompting to place the next page on the table:

  1. Place the next test chart page on the table.
  2. Recalibrate the table and use the manual controls as described above to indicate two corners of the chart. The third corner is calculated automatically.
  3. Click Start to measure the next page.

Important: If the second page was placed EXACTLY where the first page was, you can continue without recalibrating. The previously set coordinates will then be used again.

Creating charts with Barbieri gateway and measuring using ColorAnt

To create ColorLogic charts within Barbieri Gateway’s chart generator, including the auto positioning feature, follow the procedure below:

Copy the ColorLogic charts to the user directory: Myuser>Documents>Barbieri>Gateway
Start the Barbieri Chart Generator and select the reference file from the CLReferencesBarbieri folder.

Add the desired options to the chart, e.g., auto positioning markings, reference area, etc., and Save the target file.

Load the reference file into ColorAnt by dragging and dropping the .ref file onto the Data Sets window. The target file can be found in the Gateway>Targets folder.

If the patches do not match the printed chart, right-click on the reference in the Data Sets window and select Swap Rows with Columns. Check the patch arrangement again in the View tool.

Select the reference file and click Measure. Ensure that the correct chart has been selected. Select the Spectro LFP qb from the device list and click Connect.

Once the device is connected, the Spectro LFP qb wizard will be displayed. Simply select auto positioning and click Start.

Konica Minolta Devices

Konica Minolta FD-7

Measuring with the Konica Minolta FD-7

Calibration

Step 1: Select the device from the Selection drop-down list in the Device tab.

Step 2: Click Connect.

Step 3: Set the device on the white reference with the Target Mask attached. Correctly place it on the calibration tile and press it down. Click OK and keep the device pressed down until the measuring mode can be selected in the upper left-hand corner of the measuring window.

Device options

Once the device is connected and calibrated, the measurement options become available.
Condition: M0, M1, M2.
Direction: Specify the mode of the measurement.

Measure

Step 1: Select the device from the Selection drop-down list in the Device tab and perform the white calibration as described above.

Step 2: Place the instrument in front of the first patch of the line to be measured and press the measure button of the instrument. Hold down the button and move the device over the strip until after the last patch. Release the button.

Step 3: The data is transferred to the Measure Tool and you can proceed to the next line.

Step 4: Once the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

Ambient Light Measuring

Ambient light measurements can be performed either using the Measure Tool 2.0 or from within the CIE Conversion tool.

Measure Tool: Select the Ambient Light Measurement mode from the menu Measure Mode or click on the light bulb icon next to the Selection drop-down menu.
CIE Conversion: Select Emission (Measure) from the drop-down list Illumination. This will start the Measure Tool.

Step 1: Select the device from the Selection drop-down list in the Device tab and perform the white calibration as described above. After calibration, confirm the message Please prepare the device for ambient light measuring.

Step 2: Attach the ambient light head to the device.

Step 3: Click on Measure.

Step 4: Transfer the measured data to ColorAnt by clicking Transmit.
The measured values will be displayed either in the panel Data Sets (when using the Measure Tool directly) or in the CIE conversion tool.

Step 5 (CIE conversion only): Click on Start. The data of the ambient light measurement are used to convert the selected spectral data to the new viewing condition.

Konica Minolta FD-9

Measuring with the Konica Minolta FD-9

Step 1: Select the FD-9 from the Selection drop down list in the Device tab.

Step 2: Click on Connect.

Using the Konica Minolta FD-9 over the network

The Konica Minolta FD-9 can be connected to the local area network via Ethernet, which allows direct transfer of measurement data to computers on the same LAN/WLAN.

Configure the network settings on the instrument according to the Konica Minolta FD-9 user manual.

In the ColorAnt Measure Tool, select the Konica Minolta FD-9, click on the network icon and enter the IP address of the FD-9 in the address field. Click OK to establish the connection.

Note: A USB connection always has priority. If the device is to be used via LAN/WLAN, disconnect the USB cable.

Device options

Once the device is connected, the Setup Wizard opens:

Settings

Measurement condition: M0, M1, M2, M3.

Lines per page: Define the number of lines on your chart. If the chart contains several pages, define the number of lines of the first page.

Number of pages: Automatically calculates the number of pages.

Freeform: Put the chart on the table of your FD-9 and the device will recognize it automatically.

Target: Requires the definition of the chart size, patches etc., and the FD-9 will search the page for a chart that fits the parameters.

Measure

Step 1: After connecting the device the Setup Wizard opens.

Step 2: Define the settings and click Start.

Step 3: The FD-9 will display a message to insert the chart. Insert the chart and wait until the measurement process is completed.

Step 4: Once the measuring is complete the data will be displayed in the Measure Tool. Save the data and continue.

Techkon Devices

Techkon SpectroDens

Measuring with the Techkon SpectroDens

Important: Techkon devices are only available under Windows.
Techkon devices also require the TechkonDeviceServer service from Techkon GmbH for operation which is available for download here: http://www.colorlogic.de/Seiten/Download/TDService.2.0.0.8.exe

Step 1: Choose the device from the Selection drop-down list in the Device tab.

Step 2: Click Connect.

Step 3: Place the device on the white reference patch. Confirm by clicking OK.

White Reference Calibration

Device options

Once the device is connected the Setup Wizard of the SpectroDens opens:

Settings

Measurement condition: M0, M1, M2, M3.

Polarization Filter: Depending on your instrument version, the polarization filter can be adjusted manually or automatically. If this is purely automatic, the selection is grayed out and dependent on the selection of the measurement condition.
Illuminant: Choose between A, C, D50, D65, F2, F7 and F11. Illumination depends on the measure condition.
Observer: Choose between O2 and O10.
Select how to measure the chart in the main window under Direction.

Measure

Step 1: In the Device tab, select the device from the Selection drop-down list and start the white calibration.

Step 2: Place the device on the first patch of the line. Press down the measure button of the device and move over the line of patches until crossing the last patch in line. Release the button.

Step 3: Data will be transferred to the Measure Tool. Continue with the next line.

Step 4: Once the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

Techkon SpectroJet

Measuring with the Techkon SpectroJet

Important: Techkon devices are only available under Windows.
Techkon devices also require the TechkonDeviceServer service from Techkon GmbH for operation which is available for download here: http://www.colorlogic.de/Seiten/Download/TDService.2.0.0.8.exe

Step 1: Choose the device from the Selection drop-down list in the Device tab.

Step 2: Click Connect.

Step 3: Place the device on the white reference patch. Confirm and click OK.

White Reference Calibration

Device options

Once the device is connected, the Setup Wizard for the SpectroJet opens:

Settings

Patch Width: Specify the patch width in millimeters.
Gap Width: Enter the width of the patch separator in millimeters.
Measure Condition: M0, M1, M2, M3.
Polarization Filter: Depending on your instrument version, the polarization filter can be adjusted manually or automatically. If this is purely automatic, the selection is grayed out and dependent on the selection of the measure condition.
Illuminant: Choose between A, C, D50, D65, F2, F7 and F11. Illumination depends on the Measure condition.
Observer: Choose between O2 and O10.
Select how to measure the chart in the main window under Direction.

Measure

Step 1: In the Device tab, select the device from the Selection drop-down list and start the white calibration.

Step 2: Place the device on the first patch of the row. Press the measure button on the device once. Move over the row of patches until the last patch of the row.

M0 & M3: Measuring the row one time is sufficient for accurate measurement.

M1 & M2: The device display prompts for a second measurement to complete the dual measurement.

Tip: If a measurement fails, retry by adding more distance before the first patch and behind the last patch.

Step 3: Data will be transferred to the Measure Tool and continue measuring the next line.

Step 4: Save the data once all the rows have been measured.

X-Rite Devices

X-Rite eXact

Measuring with the X-Rite eXact

Step 1: Choose the device from the Selection drop-down list in the Device tab.

Step 2: Click on Connect.

Step 3: If asked to do a white calibration, confirm by clicking on OK. White calibration is done by the device internally.

White Reference Calibration

Device options

When the device connects, the eXact Setup Wizard opens:

eXact Setup Wizard

Settings

Patch Width (mm): Automatically calculates the width of a single patch.

Gaps Width (mm): Specify the gaps width in millimeters.
Chart Width (mm): Specify the chart width in millimeters.
Measurement Condition: M1 and M0/M2/M3. Use the slide switch on the unit to switch between the two available conditions – M1 and M0/M2/M3. In M0/M2/M3 mode, all available measurement conditions are measured in one pass.

Once all settings have been made, you can select how the chart is to be measured in the main window under Direction.

Measure

Step 1: In the Device tab, select the device from the Selection drop-down list and start the white calibration.

Step 2: Place the device on the first patch of the row and press down the folding mechanism of the device. This will start the measurement. Wait for the beep and, with the instrument pressed down, move over the strip to the last patch in the row. The measurement will stop automatically. Release the device.

Step 3: The data will be transferred to the Measure Tool. Continue with the next line.

Step 4: When the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

Measure (single patch mode)

To measure in single patch mode without the scan attachment, proceed as follows:

Step 1: Select the device from the Selection drop-down list in the Device tab and start the white calibration.

Step 2: After closing the settings dialog with OK, select the direction Patches – Line by Line under Options in the upper right corner of the main window.

Step 3: Place the device on the first patch of the row and press down the folding mechanism of the device. This will start the measurement. After you hear the beep, you can lift up the instrument.
Step 4: The data is transferred to the Measure Tool and you can continue with the next patch.

Step 5: When the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

X-Rite eXact2

Measuring with the X-Rite eXact2

Step 1: Choose the device from the Selection drop-down list in the Device tab.

Step 2: Click on Connect.

Step 3: If asked to do a white calibration, confirm by clicking on OK. White calibration is done by the device internally.

White Reference Calibration

Using the X-Rite eXact2 over the network

The X-Rite eXact2 can be connected to the local area network via Ethernet, which allows direct transfer of measurement data to computers on the same LAN/WLAN.

Configure the network settings on the instrument according to the X-Rite eXact2 user manual.

In the ColorAnt Measure Tool, select the X-Rite eXact2, click on the network icon and enter the IP address of the eXact2 in the address field. Click OK to establish the connection.

Note: A USB connection always has priority. If the device is to be used via LAN/WLAN, disconnect the USB cable.

Device options

When the device connects, the eXact2 Setup Wizard opens:

eXact2 Setup Wizard

Settings

Measurement Condition: In M0/M1/M2/M3 mode, all available measurement conditions are measured in one pass.

Patch Width (mm): Automatically calculates the width of a single patch.
Gaps Width (mm): Specify the gaps width in millimeters.
Chart Width (mm): Specify the chart width in millimeters.

Once all settings have been made, select how the chart is to be measured in the main window under Direction.

Measure

Step 1: In the Device tab, select the device from the Selection drop-down list and start the white calibration.

Step 2: Place the device on the first patch of the row and press the measuring button at the side. Press once in patch mode for single field measurement or keep pressed for strip measurement. Move over the strip to the last patch in the row. The measurement will stop automatically. Release the measuring button.

Step 3: The data will be transferred to the Measure Tool. Continue with the next line.

Step 4: When the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

Measure (single patch mode)

To measure in single patch mode without the scan attachment, proceed as follows:

Step 1: Select the device from the Selection drop-down list in the Device tab and start the white calibration.

Step 2: After closing the settings dialog with OK, select the direction Patches – Line by Line under Options in the upper right corner of the main window.

Step 3: Place the device on the first patch of the row and press the measuring button of the device. This will start the measurement.

Step 4: The data is transferred to the Measure Tool and you can continue with the next patch.

Step 5: When the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

X-Rite i1Pro 1

Measuring with the X-Rite i1Pro 1

Step 1: Choose the device from the Selection drop-down list in the Device tab.

Step 2: Click Connect.

Step 3:  Place the device on the white reference and click OK.

White Reference Calibration

Device Options

As soon as the device is connected define the Measurement Condition.

Settings

Measure Condition: M0 (Single), M0/M1/M2 (Dual).
Note: The measure condition can only be selected with the i1 Pro-2.
Once all settings have been made, you can select how the chart is to be measured in the main window under Direction.

Measure

Step 1: Choose the device from the Selection drop-down list in the Device tab and perform white calibration.

Step 2: Place your device in front of the first patch of the first row and press the measure button of your device. Keep the button pressed and move over the entire row. Release the button.

Step 3: The data will be transferred to the Measure. Continue with the next row.

Step 4: After measuring all rows save the data in Measure Tool.

Step 5: When the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

Dual Mode: If dual mode was selected each row needs to be measured twice. After measuring in one direction, the LED on the device indicates the direction to be measured next.

X-Rite i1Pro 2

Measuring with the X-Rite i1Pro 2

Calibration

Step 1: Select the device from the Selection drop-down list in the Device tab.

Step 2: Click Connect.

Step 3: Set the device on the white reference. Correctly place it on the calibration tile and click OK. The instrument will be calibrated.

Device Options

When the instrument has been connected, the Setup Wizard opens, showing the Measurement Options for the instrument.

Use Zebra Ruler: Using the ruler improves the M0 single scan measurement, but is not required and can be deactivated with the checkbox. The ruler allows a more precise control of the position/speed of the measuring device, which reduces the risk of measurement errors.

Ambient Light Measuring

Ambient light measurements can be performed either using the Measure Tool 2.0 or from within the CIE Conversion tool:

Measure Tool: Select the Ambient Light Measurement mode from the menu Measure Mode or click on the light bulb icon next to the Selection drop-down menu.

CIE Conversion: Select Emission (Measure) from the drop-down list Illumination. This will open the Measure Tool.

Step 1: Select the device from the Selection drop-down list in the Device tab and perform the white calibration as described above. After calibration, confirm the message Please prepare the device for ambient light measuring.

Step 2: Attach the ambient light head to the device.

Step 3: Click on Measure.

Step 4: Transfer the measured data to ColorAnt by clicking Transmit.

The measured values will be displayed either in the panel Data Sets (when using the Measure Tool directly) or in the CIE conversion tool.

Step 5 (CIE conversion only): Click on Start. The data of the ambient light measurement are used to convert the selected spectral data to the new viewing condition.

X-Rite i1Pro 3

Measuring with the X-Rite i1Pro 3

Calibration

Step 1: Select the device from the Selection drop-down list.

Step 2: Click Connect.

Step 3: Set the device on the white reference. Correctly place it on the calibration tile and click OK. The instrument will be calibrated.

Measurement Options

When the instrument has been connected, the Setup Wizard opens, showing the Measurement Options for the instrument.

Use Zebra Ruler: Using the ruler improves the M0 single scan measurement, but is not required and can be deactivated with the checkbox. The ruler allows a more precise control of the position/speed of the measuring device, which reduces the risk of measurement errors.

Measurement Condition: M0/M1/M2 or M3. With the combined conditions M0/M1/M2 all available measurement conditions are always measured in a single step. To be able to measure in M3 mode, the corresponding polarisation filter head must be mounted to the instrument before connecting the instrument. The Measure Tool automatically detects which head is currently in use and sets the Measurement Condition accordingly.

When all settings have been made, define how the chart is to be measured under Direction in the main window.

Measure

Step 1: Select the device from the Selection drop-down and perform the white calibration.

Step 2: Under Options > Direction, select how you would like to measure the test chart. For measurements with the ruler we recommend the option Scan complete rows.

Step 3: Place the instrument in front of the first patch of the row to be measured and press the measure button on the instrument. Keep the button pressed while moving the instrument across the strip and beyond the last patch. Release the button.

Step 4: The data is transferred to the Measure Tool. Continue with the next row.

Step 5: Once the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

ColorAnt allows the transmission of individual or all available measurement conditions. In the latter case, several data sets are transmitted. For easy differentiation, the measurement condition is appended to the file name of each data set.

Ambient Light Measuring

Ambient light measurements can be performed either using the Measure Tool or from within the CIE Conversion tool:

Measure Tool: Select the Ambient Light Measurement mode from the menu Measure Mode or click on the light bulb icon next to the Selection drop-down menu.

CIE Conversion: Select Emission (Measure) from the drop-down list Illumination. This will open the Measure Tool.

Step 1: Select the device from the Selection drop-down list in the Device tab and perform the white calibration as described above. After calibration, confirm the message Please prepare the device for ambient light measuring.

Step 2: Attach the ambient light head to the device.

Step 3: Click on Measure.

Step 4: Transfer the measured data to ColorAnt by clicking Transmit.

The measured values will be displayed either in the panel Data Sets (when using the Measure Tool directly) or in the CIE conversion tool.

Step 5 (CIE conversion only): Click on Start. The data of the ambient light measurement are used to convert the selected spectral data to the new viewing condition.

X-Rite i1iO

Measuring with the X-Rite i1iO

Step 1: Choose the device from the Selection drop-down list in the Device tab.

Step 2: Click Connect.

Device options

Once the device is connected the Setup Wizard of the i1iO opens:

Settings

Rows per page: Specify the number of rows. If the chart contains several pages, specify the number of rows of the first page.

Gap Size (horizontal/vertical): Specify the width of vertical and horizontal gaps as required.

Number of pages: Automatically calculates the number of pages.

Measurement condition: M0 (Single), M0,M1,M2 (Dual).

Note: M0 (Single) measurements support a minimum patch size of 7 mm wide and 6 mm high. In this mode every row is measured once. The different Dual modes need patches that are at least 8 mm wide and 7.5 mm high. The rows will be measured twice.

Note: If you are using an older i1Pro (up to RevD), only the M0 mode is available. The dual measurement is only supported by the newer i1Pro-2.

Measure

Step 1: After selecting and connecting your device the Setup Wizard starts.

Step 2: Specify the rows and gaps, then click Next to proceed.

Step 3: On the next page define the Chart Corners (1 top left, 2 bottom left, 3 bottom right).
Note: To avoid small measurement errors, the fourth chart corner can also be defined.

Step 4: To define a corner, place the crosshairs of the slide in the middle of the corresponding patch (in the respective corner) and press the i1 measuring button once.

Step 5: The Setup Wizard now continues with the next corner. Repeat step 4 for the lower left corner and then for the lower right corner.

Information: If you need to correct corners click on Delete Corner Points.

Step 6: After defining the corners begin measuring with Start.

Step 7: When the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

Multipage Test Charts

Step 1: When measuring multilateral test charts, the Setup Wizard reopens after measuring the first page.

Step 2: Put the next page on the iO table and make sure that the right chart image is selected. Define the Chart Corners again and start the measuring process by clicking on Start.

Step 3: Repeat these steps until all pages are measured.

Step 4: After measuring all pages of the test chart save the data for further processing.

X-Rite i1iO3

Measuring with the X-Rite i1iO3

Step 1: Choose the device from the Selection drop-down list.

Step 2: Click Connect.

Device options

Once the device is connected the Setup Wizard of the i1iO3 opens:

Settings

Scan Options

Rows per page: Specify the number of rows. If the chart contains several pages, specify the number of rows of the first page.

Gap Size (horizontal/vertical): Specify the width of vertical and horizontal gaps as required.

Number of pages: Automatically calculates the number of pages.

Measure Options

Measurement Condition: M0/M1/M2 or M3. With the combined conditions M0/M1/M2 all available measurement conditions are always measured in a single step. To be able to measure in M3 mode, the corresponding polarisation filter head must be mounted to the instrument before connecting the instrument. The Measure Tool automatically detects which head is currently in use and sets the Measurement Condition accordingly.

When all settings have been made, define how the chart is to be measured under Direction in the main window.

More accurate (Patch by Patch): By activating the checkbox, a step-by-step single patch measurement is performed instead of a strip measurement.

Measure

Step 1: After selecting and connecting your device the Setup Wizard starts.

Step 2: Specify the rows and gaps, then click Next to proceed.

Step 3: On the next page define the Chart Corners (1 top left, 2 bottom left, 3 bottom right).
Note: To avoid small measurement errors, the fourth chart corner can also be defined. To do so, please tick the checkbox Enable fourth corner.

Step 4: To define a corner, place the crosshairs of the slide in the middle of the corresponding patch (in the respective corner) and press the i1 measuring button once.

Step 5: The Setup Wizard now continues with the next corner. Repeat step 4 for the lower left corner and then for the lower right corner.

Information: If you need to correct corners click on Delete Corner Points.

Step 6: After defining the corners begin measuring with Start.

Step 7: When the measurement is complete, click on the Transfer icon to open the Transfer measurement dialog. Here the measurement data can be discarded or transferred to ColorAnt.

If several measurement conditions have been used, the results/measured values of the individual conditions can be selected and viewed in the drop-down menu next to the Transfer icon.

Multipage Test Charts

Step 1: When measuring multilateral test charts, the Setup Wizard reopens after measuring the first page.

Step 2: Put the next page on the iO table and make sure that the right chart image is selected. Define the Chart Corners again and start the measuring process by clicking on Start.

Step 3: Repeat these steps until all pages are measured.

Step 4: After measuring all pages of the test chart save the data for further processing.

X-Rite i1iSis 2/XL

Measuring with the X-Rite i1iSis 2/XL

Step 1: Select the i1iSis measuring device from the Selection drop down list in the Device tab.

Step 2: Click on Connect. Once the device is connected, the Setup Wizard opens:

Measurement Options

Measurement condition: M0, M1, M2.

Scan Options

Page: Automatically calculates the number of pages. Shows the current page.

Rows per page: Define the number of lines on your chart. If the chart contains several pages, define the number of lines of the first page.

Patch width / height: Define the size of a patch in mm.

Status Info

Indicates the current stage of the measurement process.

Measure

Step 1: After connecting the device the Setup Wizard opens.

Step 2: Define the settings and click Start.

Step 3: The i1iSis will move to it’s startposition. Insert the chart and wait until the measurement process is completed.

Step 4: Once the measuring is complete the data will be displayed in the Measure Tool. Select either Transfer and Quit to send the data to the Data Sets section and close the Measure Tool or continue with further measurements.

ColorAnt allows the transmission of individual measurement conditions or all available measurement conditions. In the latter case, several data sets are transmitted. For easy differentiation, the measurement condition is appended to the file name for each data set.

ColorAnt | Edit Primaries

Edit Primaries

Customize options for file processing

Edit Primaries

The Edit Primaries tool allows users to add, remove, and exchange primaries or the paper/substrate in existing measurement data.

In typical print production, adding or swapping ink(s) requires the expense of printing a complete, full size test chart. The Edit Primaries tool simply requires the spectral data of the new ink(s) to be added or exchanged. It also recalculates all overprints based on intelligent spectral color models.

One of the major features of the Edit Primaries tool is the ability to dynamically select the best patches from the data provided. The more complete the data (spectral data is preferred) the more accurate the results.

More complete data improves:

  • Exchange of gradations of the primary color
  • Overprint information, e.g the primary combined with black and secondary colors
  • Spectral data in general, providing the printing sequence information.

This allows creating of new ICC profiles for new color combinations quickly.

Examples for efficiency gains when using the Edit Primaries tool in production:

  • Variance in press condition: The characterization press run is slightly deficient in solid ink density or hue on one or more colors.
    This video demonstrates the procedure with ColorAnt
  • Exchange of paper/substrate: The inks are the same but a slightly different paper is used in production or a specific job.
  • Exchange inks in packaging print production:
  • Create a new set of characterization data that swaps in e.g. Blue for a Cyan or a Rhodamine Red for Magenta.
  • Adjust Printing Sequence: Allows improved overprint calculations. Watch an example here.
  • Flexibility for packaging customers: Create different color variants from a full blown 7 color press characterization data set by deleting channels to create new characterization data sets without printing a new test chart. For example, from an 7C data set (e.g. CMYK+Orange+Green+Violet) build variants for CMYK only, CMY+Violet, CMYK+Orange+Green or other combinations. Ensure that the printing process is stable and use the color combinations you need to fulfill the respective customer orders.
  • Increase CMYK gamut: Adding a 5th, 6th or 7th color to a CMYK printing process.
  • Modify channel names: Reorder channel names without data modification.

Restore last edits: Use Restore to exit the tool without losing any of the changes already made. Click Cancel. ColorAnt will remember the edits made up to this point, and leave the Edit primaries tool. Restore these edits after you return by clicking the Restore button. You can now continue your work where you left off. For example, if after a few edits you notice that you forgot to load a required file into ColorAnt, you can exit the tool, load the file and return without having to make these edits again.

Restore last edits: Use this function to exit the tool without losing any of the changes already made.

Click Cancel. ColorAnt will remember the edits made up to this point, and leave the Edit primaries tool. Restore these edits after you return by clicking the Restore button. You can now continue your work where you left off.

For example, if after a few edits you notice that you forgot to load a required file into ColorAnt, you can exit the tool, load the file and return without having to make these edits again.

Define Primary Information

Linearize new channels using ISO 20654 (SCTV): The checkbox becomes available when a new channel is added, or if reference data without measurement data are loaded. When checked the gradients of the newly added channels are linearized according to the ISO 20654 (SCTV) standard. If channels of another data set are selected and the checkbox is selected, all channels are linearized according to ISO 20654 (SCTV). Otherwise, the original gradations of the loaded colors will be used.

Search: Allows searching for specific colors in large color libraries such as Pantone®. It is available in the context menu by clicking the eyedropper when replacing a color.

Exchange a Primary Color

One of the main features of Edit Primaries is the exchange of primary colors creating a new set of characterization data.

Procedure:

  1. Load the measurement data of the test chart to be edited in ColorAnt, then load the data set containing the measured new primaries, including gradations of the primaries and overprint information.
    A sample of a reference file for CMYK plus one spot color is included with ColorAnt. The wedge Spotcolor-CMYK+X-v1.txt (shown as Red spot color in the screenshot) is located under File/Open Predefined. Use the tool Export Chart to generate a printable wedge.
  2. Click on the measurement data to be edited (to select it) and click on Edit Primaries.
  3. Exchanging a primary: Click on the eyedropper icon of the color to be exchanged (see screenshot demonstrating an exchange of Yellow).

  4. Select the new primary from the second data set loaded in ColorAnt. To do so, click on the channel containing the new primary. Selecting a color from another channel of the same data set is also possible. In Edit Primaries the Lab value of the new primary will be shown allowing you to check immediately if the changes have taken place. If the imported measurement data are spectral data the star will be highlighted.

  5. If two or more primaries are added from a single data set containing overprints of these primaries, then these measurements can be used by ColorAnt and the checkbox Adopt Secondaries will be enabled.
    Note: Adopt Secondaries is only enabled if secondary colors are available in the selected data set. When moving the mouse over the text a tooltip will show the selected color combinations and the associated data sets.
  6. If no measurement data of the new primary is available, Lab values can be entered in the numbers box (however, calculations will not be as exact as with spectral measurement data). This will be visualized by a gray star icon.
  7. When complete click Start and the data will be modified and shown in the Data Sets section of ColorAnt. Save the new data with File/Save as to be used for other tasks, for example, creation of ICC profiles with ColorLogic CoPrA.
  8. To check the exchange of primaries, use the Compare tool to verify the data.

Specifics

  • If a solid color is used to replace a primary color but does not contain any gradation values, ColorAnt uses the gradation behavior of the original primary color.
  • Edit Primaries dynamically selects the best patches from the data provided. The more complete the data (spectral data is preferred) the more accurate the results. The exchange of primaries will improve when providing gradations of the primary color and  overprint information, such as the primary with black overprints or secondaries.
Adding Channels

Note:  To add channels a ColorAnt L license is required.

Procedure:

  1. Load the test chart measurement data and load the secondary file with the measured primaries, gradation and overprint information into ColorAnt.
  2. Select the measurement data you would like to edit and click Edit Primaries.
  3. Click on Add Channel. A new channel with default gray Lab values and the channel name Auto is added.
    Note: The Auto entry will take the channel name from the second data set.
  4. Click on the eyedropper icon of the new channel and select the new primary from the second data set. Click on the channel to import the data.

    Example of a 5th color (Red) being added to an original CMYK data set.

  5. To rename the channel click on the pencil icon and enter the desired name in the appearing window Edit Primary Name.

    Important:
    Define the Original Printing Sequence and the Edited Sequence. This is especially important when a new ink is added as it can be added as the last ink or placed in between other primaries.
  6. If two or more primaries are added from a single data set containing overprints of these primaries, then these measurements can be used by ColorAnt and the checkbox Adopt Secondaries will be enabled.
    Note: Adopt Secondaries is only enabled if secondary colors are available in the selected data set. When moving the mouse over the text a tooltip will show the selected color combinations and the associated data sets.
  7. Click Start and the new 5 inks data set will be generated. ColorAnt will calculate modified measurement data which can be found under Data Sets. Save this file under File/Save as for further usage, e.g. creation of ICC printer profiles in CoPrA.
  8. To examine the new data set, use the View tool and select the tabs 2D, 3D, SpiderWeb and TVI  to check that all colors including overprints have been added correctly. The TVI curves of the 5th channel can be edited further by using the Tone value tool and/or other tools like Smoothing. Finally, CoPrA can be used to build a 5 channel printer profile.

Adopt Secondaries: Allows secondary color values to be used additionally. The option is only enabled if secondary colors are available in the picked data set and at least two colors are exchanged. A tool tip indicates the selected overprints and the associated data sets. The option can be disabled if the measurement overprints are not suitable for the given data, in which case Edit Primaries will calculate the overprints itself.
Using color overprints can improve the accuracy of the rendering and calculation of the spectral color model.

Linearize new channels using ISO 20654 (SCTV): This function allows the gradients of newly added channels to be linearized according to the ISO 20654 (SCTV) standard. The checkbox is available when a new channel is added, or when reference data are loaded without measurement data. If channels of another data set are selected and the checkbox is activated, all new channels are linearized according to ISO 20654 (SCTV). Otherwise the original gradations of the loaded colors will be used.

Removing Channels

Note: A ColorAnt L license is required to remove channels.

  1. Load and select the measurement data of a test chart and click Edit Primaries.
  2. Disable the checkboxes in front of the channels that need to be deleted and click Start. The information area of the Edit Primaries tool displays the channels of the resulting data set.
  3. The new data set will be reduced to the channels that have been enabled. Please be aware that this is a Multicolor file and may only be used in ColorLogic CoPrA if a Multicolor license is loaded.

Note: Edit Primaries can be used to extract individual channels from complete test chart measurement data by removing all other channels. Just leave the checkbox of the desired channel activated and deactivate the checkboxes of all other channels.

Reordering Channels

The channel order can be changed within a file without changing the measurement data itself. For example, if you have added the additional channels Orange and Green to a CMYK data set you can change the order to CMYK+Green+Orange afterwards.

Simply click on the eyedropper icon and select Orange for Green and Green for Orange from the same measurement data file. This will change the channel order without changing the measurement data. If only the channel order has been changed, this is indicated by the name ChannelOrder in the file name.

Note: The channel reordering feature in Edit Primaries and the Link tool Merge by Channel Name can be used to prepare Multicolor measurement data from different origins. For example it allows to combine the four separate 4 color Esko Equinox files to a 7 color Multicolor data set to be used for profiling in CoPrA.

Creating new characterization data on existing wedges

The Edit Primaries tool allows the assignment of new color values to device values (DCS values) which do not already contain color values. Thus, new characterization data can be created based on CxF/X-4 data, existing wedges of primaries, the input of Lab values or other characterization data sets without the need to reprint test charts.

Procedure:

  1. Open a reference file (for example IT8/7-4) and, if available, measurement wedges or existing characterization data of test charts containing the desired colors.
  2. Select the reference file, click on Edit Primaries and use the eyedropper tool to choose colors from the pool of measurement values.
  3. Alternatively, fill in the Lab value if there isn’t other data available. The best results are achieved using spectral values, wedges or information on overprints.
  4. If two or more primaries are added from a single data set containing overprints of these primaries, then these measurements can be used by ColorAnt and the checkbox Adopt Secondaries will be enabled.
    Note: Adopt Secondaries is only enabled if secondary colors are available in the selected data set. When moving the mouse over the text a tooltip will show the selected color combinations and the associated data sets.
  5. If measurement values are assigned to all primaries and the paper white, click Start.

Note:

  1. The integrated progress bar shows the status of the calculations. With complex mathematical calculations, especially with large test charts and many channels, you are always informed how long these can still last.
  2. When extracting measurement data containing overprint information with black from CxF/X-4 files (so-called full characterisation), you should note that no black gradient is stored in CxF/X-4 files. If you want to edit a black channel with gradient in Edit Primaries, you should use the black gradient from another measurement file and not from the CxF/X-4 file.

Define Substrate/Paper White

Define Substrate/Paper White

Minor changes in paper color do not affect the full tone of the primary colors. In this case, the paper color can be replaced with a similar paper color of an existing dataset.

However, significant changes in paper white affect the entire color space. Major changes in paper white also have a strong effect on the primary colors.

If the white point changes significantly, it can be (re-)measured directly from within the Edit Primaries tool. This measurement data can then be used to correct the white point of the selected dataset. The corrected white point is then applied to the entire measurement data keeping the print characteristic intact. (see instructions below).

Note: If you just want to change the white point use our dedicated White/Black Correction tool.

Replacing the paper color with data from an existing dataset

  1. Load the test chart measurement data and load the secondary file containing information of the measured paper white into ColorAnt.
  2. Select the measurement data of the data to be edited and click Edit Primary.
  3. Click on the eyedropper icon of the Substrate/Paper white and select the new paper white from the second data set. Click on the name of the data set to import the data.

  4. Alternatively, if no measurement file of the new paper white is available, the new values can be entered in the number field as Lab values. However, this is not as precise as working with spectral data.
  5. Click Start and the data set will be modified. The modified measurement data can be found under Data Sets. Save this file under File/Save as for further usage, e.g., creation of ICC printer profiles with CoPrA.

Direct measurement of the white point

Proceed as follows to measure and adjust the white point:

  1. Load the measurement data to be corrected and open the Edit Primaries tool.
  2. Click on the eyedropper icon and select the option Measure.
  3. The Measure Tool opens with the preselected chart for measuring the paper white with a single patch.
  4. After the measurement, the new white point data is transmitted back to the Edit Primaries tool and is applied to the entire measurement data keeping the print characteristic intact.

Note: The white point measurement is also listed under Data Sets.

Define the Printing Sequence

Define the Printing Sequence

The Printing Sequence defines the order in which the colors are printed on top of each other and can be set independently of the channel sequence. When primary colors are exchanged or added, overprinting colors can be correctly calculated by specifying the correct printing order. By changing the print sequence, you can also check whether a changed sequence increases or decreases the gamut.

The printing sequence can be changed by dragging and dropping color symbols

Example: There is a difference in color when a red is printed on a yellow or vice versa. Users can set the print order independently of the channel order so that the channel order is maintained, for example as CMYK, even if the print order is KCMY.

Procedure:

  1. Load a measurement file under Data sets, preferably with spectral data, and open Edit Primaries.
  2. The initial print order, represented as the Original Sequence, of a loaded data set corresponds to the channel order. Change the Original Sequence by clicking on a colored icon and moving it to the desired position.
    Example flexo printing: The colours are usually printed from dark to light, whereas the channel sequence implies a different arrangement.
    Note: When an edited data set is reopened, the Original Sequence reflects what has been done and saved the last time.
  3. Edited Sequence specifies the order of the colors in which they are to be printed.
    Note: If you do not need to change the print order, make sure that the edited order is the same as the original order.
  4. After you are done click Start and the data set will be modified. The modified measurement data can be found under Data Sets.
  5. Save this file under File/ Save as for further usage, e.g. creation of ICC printer profiles with CoPrA.

ColorAnt | Tone Value

Tone Value

Correct measurement data to a specific set of curves

Tone Value

The Tone Value tool allows the correction of measurement data as well as the calculation of RIP compensation curves based on specific targets (e.g., G7®, ISO 20654 SCTV).

There are three different ways to ensure tone value correction is incorporated properly into measurement data. The curves created in this way are the final cut-back, compensation, calibration curves.
Note: It is not recommended to bend measurement data to a preferred standard without having printed so or without applying an appropriate RIP compensation curve.

Correction according to a tone value curve of an ICC profile:
Specify a profile and the measured values or the RIP compensation curves are adjusted to achieve the same tone value increase curves as those of the selected profile.

Correction according to a profile

Note: Depending on the loaded measurement data only ICC profiles fitting the color space are shown (e.g., CMYK or multicolor. In this example a 7 inks multicolor profile is selected).

Correction according to:
Tone value curves are calculated to match the requirements of G7® Gray Balance or ISO 20654.

Correct Measurement data and RIP curves to given standards

G7® Gray Balance: The tone value curves are calculated to correspond to the gray balance conditions of the G7® method. The aim of the G7® method is to adjust the CMY curves in such a way that they result in as neutral a gray hue as possible with defined lightness over the entire gray balance.

ISO 20654: This method is based on colorimetric linearities and can be used instead of density calculations for spot colors. It can also be applied to CMYK and ensures that the gradations of all primary colors are colorimetrically linear. This can be checked in the View window under TVI or Curves.
Note: Density-based methods like Murray Davis do not work well with non-CMYK colors. The IS0 20654 method (also known as SCTV, Spot Color Tone Value) is an alternative method for handling the tone values of spot colors.

G7® + ISO 20654: G7 is defined to work with CMYK only. However, it is possible to apply the G7® method to the CMYK parts of a Multicolor measurement file and the additional (Multicolor) channels will be corrected according to ISO 20654. The G7® calibration method ensures that the CMY curves reach a neutral gray of defined lightness values throughout the entire gray balance curve.

ISO 20654 (Multicolor): Adjusts the Multicolor channels according to ISO 20654 and leaves the CMYK channels untouched. This is useful when the CMYK parts have been calibrated according to other standards, like PSO density curves or G7® and only the additional Multicolor channels need to match ISO 20654 (SCTV) requirements.

Correction according to TVI targets:

Manual editing of each channel allows predefining the increases in tone value to be incorporated in the measurement data.

This feature works for CMYK and multicolor color spaces. Depending on the data that was loaded into ColorAnt, additional or fewer channels are displayed.

Protect Lights (%): Leaves the highlights untouched when applying any of the three correction modes.
Specify the percentage up to which the highlights are to be protected. Review the measurement data to ensure a clean transition between the protected and unprotected area. This feature is especially helpful for Flexo printing as it avoids overcompensation of dot gain in the highlights.

Save Compensation Curves as: TVI correction curves can be saved as Text, ACV or XML files. Select None, if the curves are not to be saved.

Important: These curves have to be used in the RIP to implement the corrections. Further information can be found below in the chapter Combining Print Characterization and Compensation Curve Calculation.

Text: CGATS-compliant ASCII text. Used for direct import into RIP software or prepress workflows, e.g., HYBRID CLOUDFLOW.
ACV: Saves curves in the Photoshop ACV format.
XML: Saves curves as XML files according to ISO 18620.
Note: These curves are automatically saved in the folder /Users/USERNAME/Documents/ColorAnt/Linearity on macOS systems or C:/Users/USERNAME/Documents/ColorAnt/Linearity on Windows PCs. They can then be used in either Adobe Photoshop or any external RIP software that supports the ISO 18620 standard. ZePrA also supports the exported ACV or XML curve formats in the Gradations dialog.

Correction of Tone Value Increase Curves through Presetting

With the method Correction according to TVI targets, you can edit and smooth tone value increase curves, add or remove individual control points, and transfer curves from one channel to another. You can also compare the original and modified curves. You can save curves and apply them to other data and channels. The tone value curves are displayed according to the calculation method selected in the Settings.

Apply curves to other data or channels

Procedure:

  1. Open the measurement and click on Tone Value. The channel names correspond to the names of the measurement file or are determined automatically by ColorAnt if the channel names are undefined.
     
  2. To transfer a curve shape from one channel to another, simply select the desired curve from the drop-down list of the channel to be changed, for example Cyan, to apply the Cyan curve to the Magenta (original) channel. You can also apply a previously saved (and possibly optimized) curve from another data set to the Magenta (original) channel, here for example the Magenta Tonwertvorgabe curve.
  3. After curve transfer, you will see the curve shape of the new Magenta curve (colored) and the original Magenta curve (grayed out).

  4. To make further (manual) corrections to a channel, such as Smoothing, or to remove control points, or to change individual values, click on the pencil icon or select Edited from the drop-down menu. The Custom Tone Values – Edited window opens. For information on how to make manual corrections, see Custom Tone Value – Edited below.
  5. To undo changes, select (in this example) the entry Magenta (Original) from the drop-down list.

When you have finalized your edits, apply them to the measurement data by clicking Start.

Custom Tone Value – Edited

ColorAnt’s Custom Tone Value feature is specifically designed for manual corrections such as smoothing, adding or deleting points or changing individual TVI values. In addition, save custom curves and apply them on other channels and data.

Procedure:

  1. Click on the Smooth button to smooth the curve. Only a few fulcrums are displayed after smoothing; ColorAnt does not delete​ any original fulcrums but helps to better optimize the data by reducing the number of values. Apply the corrections on the measurement data and all fulcrums will be adjusted to fit the smoothed curve.
  2. In order to add any number of additional ink values, click on the Add button. Navigate to the new empty entry that will appear in the table and type in the desired Ink Value and the Increase value in dot percentage required. Apply the changes by hitting the tabulator or the enter key on the keyboard. The curve will be immediately updated.


    Note: The original curve will be displayed in gray as a reference.

  3. Change any of the existing Increase values in the table by simply selecting an entry and changing the numbers.
  4. To delete an Ink Value, select the desired entry in the table and click Delete.
  5. Save the curve for later use. Click on Save as and enter a name for the curve in the appearing dialog.

  6. To apply the manual editing, click on OK and return to the Tone Value dialog. The edited curve will be marked as Edited.

Combining Print Characterization and Compensation Curve Calculation

  1. The ColorAnt TVI correction can be used to combine RIP compensation curves and print characterization in a single print run.
  2. Print a test chart for characterization/linearization with the RIP in linear mode
  3. Measure the test chart (These measurement data represent the linear print process)
  4. Smooth the measurement data (with the Smoothing tool)
  5. Open the Tone Value TVI correction tool
  6. Choose Correction according to a tone value curve of an ICC profile and select the target curve for the printing process
  7. Export the compensation curve in the format the RIP can read (e.g., Text for HYBRID Cloudflow)
  8. Apply the TVI correction to the measurement data (the measurement data represent the compensated print)
  9. Load the compensation curve into the RIP

The corrected measurement data can be used, for example, to create a proofing profile that represents the compensated printing process instead of the linear printing process.

ColorAnt | Preferences

Preferences

Define basic settings

Preferences

Use the ColorAnt Preferences to define the general behavior of the application.

Display Density

Defines the method for calculating and displaying densities in View and Report.

Select whether the Relative or the Absolute density is to be displayed and which of the four methods is to be used for the calculation:

  • Status-E: The default setting for CMYK data, mainly used in Europe.
  • Status-T: Mainly used in America for CMYK data, with slightly lower yellow density values.
  • Status-A: Used in the photographic industry. Use it with RGB printing systems.
  • Maximum: For Multicolor/spot color measurement data. Automatically uses the maximum absorption of the spectral values to calculate the density instead of the specified CMY filters.

Tone Value Calculation

Changes the calculation and display of the TVI curves in the View dialog.

The default setting in ColorAnt will calculate the TVI curves based on XYZ values. This mode ensures consistent views of TVI curves between measurement data and the same curves derived from ICC profiles. ICC profiles use colorimetric data. When spectral measurement data is present and the checkbox is disabled in Preferences, the TVI curves are based on density and the selected density mode is used for the calculation of the curves. This method is more consistent with the one used in print process control. Keep in mind that both the XYZ and the density method are not good indications for how TVI curves of spot colors actually look as these methods do not work well for non CMYK colors. Refer to the Curves View dialog instead to see curves according to colorimetric linearity or ISO 20654 (also known as SCTV).

General Settings

Units: Defines the measurement units used (mm or inches) in the Export Chart dialog.

Default Color Space: Defines the color space for the 2D and 3D view of the View tool. Available color spaces are Lab, LCh, YXZ and Yxy.

3D Gamut Axes Ratio (L:a:b): The default 3D gamut view uses an 1:1:1 axes ratio of the Lab axes (L:a:b). Alternatively, the axis ratio of 2:1:1 used in ColorAnt 8 and older can be selected.

Automatically reorder known charts: Enables the automatic rearrangement of color patches of randomized test charts according to the known default layout (see screenshot), i.e., it can be specified whether the existing randomized layout should be kept when loading the chart or whether the color patches should be rearranged automatically.

Note: The state of the checkbox can be switched by holding the Alt key when dragging and dropping files into ColorAnt.

Left chart: With automatic reordering
Right chart: Without automatic reordering
Test chart: IT8.7-4

Report Options 

Default save path: Reports (in PDF, XML and XSD format) are automatically saved in the folder specified here.

Default report format: Select the preferred file format for the report, either PDF or XML. If XML is selected as the format, the corresponding XSD files will be created automatically as well.

Default DeltaE Method: Define the DeltaE method to be used in reports, either dE76 or dE2000.

Open profile reports automatically with default viewer: Define whether the report should be automatically opened in the standard PDF viewer after creation.

Report Customization

The report Title and the report Logo for measurement data reports can be customized individually for all report types. Select the report type from the drop-down menu and set the desired Titel and Logo for each of the available reports.

Remaining number of characters: Shows the number of remaining characters for the report title. The report title can contain a maximum of 50 characters.

Supported image formats for the Logo are TIFF, JPEG or GIF in RGB color space.

ColorAnt | White – Black Correction

White/Black Correction

Apply Manual Corrections to Paper White

Correcting the White and Black Point

Overview

This tool allows adjusting the paper white using the White Correction and the darkest color using the Black Correction.

The White Correction tool allows manual correction of the whitest patch of the measurement data, which is usually the paper or substrate color. The tool is applied to a single measurement file. A correction by changing the Lab or LCh input value is useful in cases where either a specific target white point is to be achieved or corrections are required to lighten, darken or recolor the data. The manual correction is then applied to the entire measurement data, leaving the print characteristics intact.

White Correction: This calculates the effect of the changed paper white on the measurement values of a test chart. In ColorAnt, three different methods are available for calculating this effect: ColorLogic Default, ISO 13655 and Relative colorimetric.

Direct Measurement of the White Point

Changes in paper white affect the entire color space. Major changes in paper white also have a strong effect on the primary colors.

The white point can be (re-)measured directly from within the White/Black Correction tool. This measurement data can then be used to correct the white point of the selected dataset.

Follow these steps to adjust the white point:

  1. Load the measurement data to be corrected and open the White/Black Correction tool.
  2. Click on the eyedropper icon and select the option Measure.
  3. The Measure Tool opens with the preselected chart for measuring the paper white with a single patch.
  4. After the measurement, the new white point data is transmitted back to the White/Black Correction tool and is applied to the entire measurement data keeping the print characteristic intact.
    Note: The white point measurement is also listed under Data Sets.

White Correction Methods

ColorLogic Default: This method uses a spectral color model to apply corrections that produce the most realistic results possible. This works best when both the data to be changed and the white taken from another file are spectral data. If spectral data is not available, ColorLogic Default works in the same way as ISO 13655, assuming that shadows are not affected and that the impact on primary colors is much smaller.

ISO 13655: In the highlight areas and colorful primary colors, this method is similar to the Relative colorimetric method. However, this method assumes that the shadows and very dark colors are not changed.

Relative colorimetric: Changing the paper white will modify the entire color space. Major changes to the paper white also have a strong effect on the primary colors.

Procedure for White Correction:

  1. Load the measurement data to be corrected and the data containing measurements of the new paper white.
  2. Click on White/Black Correction
  3. Select the mode for adjusting the corrections: LCh or Lab Color Mode. The mode can be changed at any time. With LCh the hue or chroma can be adjusted independently, while the corrections in a* and b* change hue and chroma simultaneously. The split color patch displays the original white on the left side and the modified white on the right side.
  4. The white point can be edited either manually with the sliders or by entering Lab values. Alternatively, a new white point can be selected from another data file using the eyedropper icon. Simply click on it and select the data file that contains the desired white point. The new white point will be selected automatically.
    Notes: The eyedropper will pick the whites patch of the selected file. If spectral data is detected, the tool will use it according to the selected Method.
    The sliders allow for small changes. More precise numbers can be entered in the dialog box. The sliders are reset afterwards.
  5. If the lightness (L* value) is changed while using the Relative colorimetric method, the darkest colors of the measurement files are usually affected as well. If the black point and the darkest colors are not to be changed, the ISO 13655 method should be used. Both methods, Relative colorimetric and ISO 13655, apply calculations with colorimetric data. Only the ColorLogic Default method uses the full spectral data and a spectral model for the calculation.
    Note: Depending on the color difference of the paper white and the presence of optical brighteners, this may affect the primary colors.
  6. Clicking the Reset button will discard any slider modifications.
  7. Clicking the Start button applies all changes to the entire measurement file. The dialog is closed automatically after the calculation.

Black Correction

Black Correction: This method can be used to change the darkest black, thereby scaling the entire dataset to the modified black point. This is beneficial when black has been measured too dark or too light compared to the visual appearance. Common scenarios include materials used in industrial applications such as ceramics, textiles, glass, etc.
Important: Black Correction is not available when using the Relative Colorimetric Method.

Procedure for Black Correction:

  1. Load measurement data.
  2. Click on White/Black Correction.
  3. Select either ColorLogic Default or ISO 13655.
    Note: Relative colorimetric does not allow changes to the black point.
  4. Adjust the correction in LCh or Lab Color Mode. LCh allows adjustment of the hue or chroma independently whereas corrections in a* and b* will change hue and chroma simultaneously. The split color patch displays the original black on the left side and the modified black on the right side.
  5. The black point can be edited either manually with the sliders or by entering Lab values.
  6. Click the Reset button to discard any slider modifications.
  7. Click Start to apply the corrections. The dialog is closed automatically after the calculation.