Six-Primary Color System Reducing Metameric Errors
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Solution Overview
Problem
Current color systems, particularly those using RGB primaries, are limited in their ability to expand color gamut without increasing viewer metameric errors and power consumption, and they lack the capability to vary color saturation effectively, as they rely on changing luminance rather than spectral output.
Innovation Solution
A six-primary color system is introduced, including red, green, blue, cyan, magenta, and yellow primaries, with a digital interface and image data converter that processes and encodes image data to display on a networked display device, using Session Description Protocol (SDP) parameters to indicate the use of a six-primary color system, allowing for enhanced color representation and saturation control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If RGB primary color system is used to expand color gamut, then color saturation is improved, but viewer metameric errors increase
Solution Approach 1:
The invention segments the color representation into six distinct primary color channels (R, G, B, C, M, Y) instead of using the traditional three RGB channels. This segmentation allows independent control of each primary color's spectral output, enabling precise color gamut expansion while maintaining accurate color perception by avoiding metameric errors through direct spectral matching.
2Manufacturing precision
If RGB primary color system is used to expand color gamut, then color saturation is improved, but power consumption increases
Solution Approach 1:
The invention implements dynamic control of six primary color light sources with independent intensity modulation for each channel. This dynamic capability allows the system to achieve desired color saturation and gamut by selectively activating and intensity-modulating only the necessary primaries, rather than continuously operating all RGB channels at high power, thereby reducing overall power consumption while maintaining color gamut expansion.
3Ease of operation
If luminance is changed to control color saturation in RGB system, then color perception is affected, but spectral output control is limited
Solution Approach 1:
The invention changes the fundamental parameters of color control by introducing six independent primary color channels with separate intensity controls. This allows direct manipulation of spectral output for each primary (R, G, B, C, M, Y) independently, enabling precise spectral tuning to achieve desired color sensations without relying solely on luminance adjustments, thus providing both ease of saturation control and versatile spectral output control.
Data Source
AI summary
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.