Multi-Primary Color Space Conversion Matrix
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Solution Overview
Problem
Current display technologies are limited by their three-valued color data, making it difficult to convert existing three-valued color data into multi-primary data for newer displays with more than three primary colors, which are designed to produce a larger color gamut.
Innovation Solution
A method and apparatus that calculates a conversion matrix to directly convert RGB data into multi-primary data, utilizing a combination of chroma/luma conversion, gamut expansion, and hue angle calculations to create a system adaptable for any number of color primaries, allowing for efficient hardware implementation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If three-valued color data (RGB) is used for display, then compatibility with existing displays is maintained, but the color gamut is limited and cannot utilize multi-primary displays
Solution Approach 1:
The patent introduces CIE XYZ color space as an intermediary coordinate system to bridge RGB and multi-primary color spaces. The conversion process uses XYZ as an intermediate step: RGB → XYZ → multi-primary. This mediator enables color gamut expansion while maintaining systematic and manageable conversion processes.
Solution Approach 2:
The color conversion process is segmented into distinct stages: (1) RGB to XYZ conversion using standard transformation matrices, (2) XYZ to multi-primary conversion using calculated transformation matrices. This segmentation makes the complex conversion manageable and allows each stage to be optimized independently.
2Productivity
If direct conversion from RGB to multi-primary data is implemented, then color rendering efficiency is improved, but hardware implementation complexity increases
Solution Approach 1:
The patent performs preliminary calculations of transformation matrices during system initialization or display calibration phases. These pre-calculated matrices are stored and reused during actual color conversion operations, avoiding repeated complex calculations and improving real-time conversion efficiency.
Solution Approach 2:
The conversion system dynamically adjusts transformation matrices based on display characteristics and viewing conditions. By changing parameters such as display gamma, color temperature, and primary chromaticities, the system optimizes color rendering for different operating conditions while maintaining efficient conversion.
Data Source
AI summary
Systems and methods are disclosed to effect a multiple mode display system that may accept multiple input image data formats and output several possible image data formats. One method is disclosed for converting from a source color space to a target color space. The source color space results from a combination of N primary color points and the target color space resulting from combination of a N+1 or more primary color points in the target color space, wherein N is an integer.