Correction Method of Color Deviation Caused by Different Angle in Color Measuring
Aiming at the color deviation caused by different angle in color measuring, a correction method has been designed. <inline-formula><tex-math notation="LaTeX">${\rm{CIE}}\,x,y$</tex-math></inline-formula> chromaticity coordinates of 34 RAL-K7 samples under different...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8703152/ |
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| Summary: | Aiming at the color deviation caused by different angle in color measuring, a correction method has been designed. <inline-formula><tex-math notation="LaTeX">${\rm{CIE}}\,x,y$</tex-math></inline-formula> chromaticity coordinates of 34 RAL-K7 samples under different illumination angles of 30°–60° were measured. Then, we use LASSO function fitting and cross validation to establish a chromaticity coordinate migration prediction model under arbitrary illumination angle in the range of 30°–60°. On this basis, chromaticity coordinates measured under any three illumination angles in the range of 30°–60° can be corrected to the chromaticity coordinate at 45°/0°CIE (Commission Internationale de L'Eclairage) standard illumination observation condition by sequential quadratic programming. The accuracy of the correction method was evaluated by experiments. The research results can provide a correction method of color deviation caused by different angle in color measuring. |
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| ISSN: | 1943-0655 |