Before taking the average of several chart measurements, intended for creating an icc characterization profile, it is advisable to check the measurements and correct them if necessary.
In this tutorial, we will measure 3 identical ECI2002R charts. The goal is to check if there is not too much difference between these charts and to check if measurement errors have not crept in during the reading.
Import of measurements made in the "Create profile" module
The imported measurements will appear in the left column
Creating a reference file
Click on the "Create a reference" button
The ECI2002R test charts being in CMYK mode, we will click on the "CMYK" button
We will choose the measurement "ECI2002R sample A" as a reference to compare it with the two others.
Drag & drop the "ECI2002R sample A" measurement into the "Drag the color table here" area
Then click on the "Use norm's Lab" button
Click on the "Next" button located at the bottom of the test chart
Name the reference file then click on "Save and exit"
The reference file appears in the left column.
Make sure the spectrophotometer is plugged in then right click on the reference file then select "Start control"
Select the options the options of the spectrophotometer then click on "I'm ready"
Position the spectrophotometer in its calibration position
Then click on the "Start calibration" button
Comparison of a measurement against the reference measurement
Drag & drop the "ECI2002 sample B" measurement file onto the "Reading # 1" button
When the measurement is loaded, click on the "Reading done" button
The report is displayed and indicates that there are samples that have an abnormally high difference.
This may be due to a defective target or to a reading error.
In the "Reading report" area we will identify the bad measurements.
Two measures are problematic:
