Virtual Color Gamuts for Wide Color 2D Images on 3D Displays
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Solution Overview
Problem
Conventional 3D displays face limitations in color gamut when displaying 2D images, as they often result in a significantly reduced color range compared to established standards like the Rec 2020 gamut.
Innovation Solution
The method involves defining two virtual color gamuts based on a combination of primary display colors exceeding the established color gamut, where the first virtual gamut approximates the target gamut and the second gamut utilizes residual power to enhance luminance, with intensity values being adjusted to fit within the achievable gamut volume, either by scaling or clipping, to maintain color balance and achieve the desired color range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional 3D displays drive each pair of primary light sources with the same data to display 2D images, then the display compatibility is maintained, but the color gamut is significantly limited compared to established standards like Rec 2020
Solution Approach 1:
The invention segments the color gamut representation by introducing multiple virtual color gamuts (first virtual color gamut approximating Rec 2020, second virtual color gamut for residual power) that map to different combinations of the six primary light sources. This segmentation allows the system to selectively use different primary color combinations to achieve the desired color gamut while maintaining compatibility with conventional 2D display modes.
Solution Approach 2:
The invention transitions from the conventional three-dimensional RGB color space to a six-dimensional color space by utilizing six primary light sources instead of three. This dimensional expansion enables the system to represent a wider color gamut (Rec 2020) while still being able to project down to conventional three-primary representations when needed for compatibility.
2Quantity of substance
If the light source uses more primary display colors than the established color gamut requires, then the achievable color range is improved, but the device complexity increases
Solution Approach 1:
The invention introduces virtual color gamuts as intermediary representations between the six-primary light source system and the conventional three-primary color spaces. These virtual gamuts serve as mediators that simplify the transformation process by providing intermediate mapping steps, reducing the computational complexity of directly transforming between six-primary and three-primary color spaces.
Solution Approach 2:
The invention changes the parameter representation by defining intensity values for virtual color gamuts that are derived from the six primary light source intensities through linear transformations. This parameter transformation approach allows the system to work with simplified intermediate parameters (virtual gamut intensities) rather than directly manipulating the full six-dimensional primary color space, reducing processing complexity.
3Measurement precision
If intensity values are adjusted to fit within the achievable gamut volume through scaling or clipping, then the color accuracy is improved, but the luminance range may be reduced
Solution Approach 1:
The invention implements dynamic selection between different virtual color gamuts based on the luminance requirements of the content. The system can switch between the first virtual color gamut (optimized for color accuracy) and the second virtual color gamut (optimized for luminance range) depending on the specific pixel or region requirements, allowing adaptive optimization of both color accuracy and luminance range.
Solution Approach 2:
The invention creates a composite color representation system that combines multiple virtual color gamuts, each optimized for different characteristics. By compositing the outputs of the first virtual color gamut (for color accuracy) and the second virtual color gamut (for luminance), the system achieves both color precision and luminance range in the final displayed image.
Data Source
AI summary
A display for displaying image data includes defining virtual color gamuts based on a plurality of primary display colors associated with a light source. At least one of the virtual color gamuts is defined to approximate an established color gamut. Intensity values associated with the virtual color gamuts are generated based on received video data, and the intensity values associated with the virtual color gamuts are used to generate drive values for the primary colors of the light source. A display using one or more virtual color gamuts is also disclosed.