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Domain and range of the CIECAM16 forward transformation.
Optics Express
|July 21, 2023
Summary
This study numerically determined the domain and range of the CIECAM16 forward transformation, solving long-standing issues in color appearance models. Findings impact cross-media color reproduction and understanding of color spaces.
Area of Science:
- * Color Science and Appearance Modeling
- * Computational Colorimetry
- * Image Processing and Reproduction
Background:
- * CIE color appearance models (e.g., CIECAM16) are crucial for predicting perceived color.
- * The domain and range of these models have historically been unresolved, limiting their application.
- * Understanding color gamuts and solids is essential for accurate color reproduction.
Purpose of the Study:
- * To numerically determine and visualize the domain and range of the CIECAM16 forward transformation.
- * To analyze the influence of viewing conditions (surround, adapting luminance, background luminance) on the model's range.
- * To provide a methodology applicable to various CIE color appearance models and illuminants.
Main Methods:
- * Linear programming approach for numerical determination of domain and range.
- * Visualization of color gamuts and color solids for optimal colors.
- * Individual analysis of surround, adapting luminance, and background luminance effects.
Main Results:
- * Ranges of CIECAM16 forward transformation increase with darker to average surrounds, higher adapting luminance, or lower background luminance.
- * The proposed methodology successfully determines and visualizes domain and range for CIECAM16 and other related models (CIECAM02, CAM16, etc.).
- * Discrepancies found between CIE colors and the International Color Consortium Profile Connection Space (ICC PCS).
Conclusions:
- * The study resolves the long-term domain and range problems for CIE color appearance models.
- * The findings offer practical applications in cross-media color reproduction.
- * Identified issues with CIE color inclusion within the ICC PCS require further investigation.
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