ColorChecker Test Chart Applications
Digital cameras: check the color restoration of cameras, lenses and
optical systems, correct the image color of digital cameras,
compare and test the target white balance, and reproduce the true
color in the color restoration system.
Video image: check the quality of static and dynamic color
reproduction of the camera, check the color restoration of the
camera and its optical system and the color restoration of the
projection system, etc.
Electronic industry: detection scanner, display, monitor color
restoration.
Printing industry: detection of any printing and proofing
procedures, detection of film, light, filters and paper.
Use of ColorChecker Test Chart
(1) color restoration
The Colorchecker test chart can restore the true color under any
illumination. The first thing you want to shoot is the ColorChecker
standard color card. The specific steps are as follows:
1. Put the ColorChecker test chart on the scene (no need to fill
the viewfinder)
2. Ensure that the camera can capture all the color blocks.
3. Let the ColorChecker test chart be located in the representative
part of the composition, not in the shadows or in the highlights
where the exposure is excessive.
4. Don't let the light reflected by other objects project onto the
color card.
5. Take photos with color cards
6. When opened in Photoshop, there will be a built-in reference
point
7. Sampling black blocks with a color sampler. The difference
between RGB should be within 7 units, about 245
8. Sampling white blocks. RGB is about 245
9. Check the color deviation. Choose the middle gray color block,
RGB value is about 128, the difference between each other should
not exceed 7.
10. If the reading scores deviate, use the horizontal or curve to
return to the above state.
11. Save the settings. This setting can be used for other graphics
under the same illumination conditions.
12. Further visual color matching can be done with other color
blocks.
Note: Corrected displays should be used, and physical ColorChecker test
cards should be placed under standard light sources with controlled
lighting conditions.
