Multi-Primary Color System Reducing Metameric Errors
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Solution Overview
Problem
Current color systems, particularly in displays, face limitations in color gamut and light output, leading to increased viewer metameric errors and higher operational costs.
Innovation Solution
The development of a multi-primary color system that includes at least four primaries, such as a red, green, blue, cyan, magenta, and yellow system, using the International Commission on Illumination (CIE) Yxy color space for encoding and decoding image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a traditional three-primary (RGB) color system is used, then the system complexity is low and compatibility with existing systems is high, but the color gamut is limited and metameric errors increase
Solution Approach 1:
The invention segments the color reproduction task by separating luminance information (Y) from chromaticity information (x, y). This allows the system to process and transmit color data more efficiently while maintaining compatibility with existing RGB displays. The segmentation enables independent optimization of different color components without increasing overall system complexity.
Solution Approach 2:
The patent introduces Yxy color space as an intermediary representation between the source image and the display device. This intermediary color space serves as a universal bridge that can represent colors beyond the RGB gamut while still being convertible to standard RGB values for display on conventional devices, thus expanding color gamut without requiring complex new display hardware.
2Measurement precision
If a multi-primary color system with at least four primaries is implemented, then color reproduction capabilities are enhanced and metameric errors are reduced, but the operational costs and energy consumption increase
Solution Approach 1:
The invention changes the color representation parameters from traditional RGB to Yxy color space, where luminance (Y) and chromaticity (x, y) are independently controlled. This parameter transformation allows for more precise color specification and reproduction without requiring additional physical light sources or increasing energy consumption, as the same hardware can achieve better color accuracy through improved data representation and processing.
Data Source
AI summary
The present invention includes systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.