Enhanced Color Space Mastering via Metadata Encoding
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Solution Overview
Problem
Current technologies fail to accurately recreate a content creator's artistic intent, particularly in color, across different display devices, as existing content mastering processes and delivery systems are based on traditional CRT technology, lacking backwards compatibility and efficient automation for new display technologies with HDR and ECG capabilities.
Innovation Solution
A system and method for mastering and distributing enhanced color space video that adjusts content for specific target display devices by encoding color rendition information as metadata, allowing for accurate color reproduction on various display technologies, including HDR and ECG devices, by identifying base band reference content, compressing it, and determining color differences to enable enhanced color rendition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If content is mastered for traditional CRT display devices, then compatibility with existing delivery systems is maintained, but color reproduction accuracy on new display technologies is degraded
Solution Approach 1:
The content is segmented into multiple color space versions (e.g., CRT-optimized and new display-optimized versions). Each version is mastered independently with appropriate color characteristics for its target display type, allowing selective delivery based on the receiving device capabilities
Solution Approach 2:
The content delivery system is designed to be universal by incorporating multiple color space masters and using metadata to indicate supported color spaces. The system can adaptively serve different display types (CRT, LCD, plasma, HDR) with appropriately optimized content versions
2Manufacturing precision
If separate color adjustments are performed for each display type (film, digital cinema, video), then color optimization for each device is achieved, but production complexity and time increase
Solution Approach 1:
Color adjustments for different display types are performed during the initial content mastering phase rather than at delivery. Multiple color space versions are prepared in advance and stored with metadata, eliminating the need for complex real-time conversions and reducing production complexity at later stages
Solution Approach 2:
Instead of creating entirely separate content versions for each display type, the system uses metadata tags to indicate which color space version should be used. This allows a single content package to serve multiple display types by selecting the appropriate pre-mastered color space variant
3Manufacturing precision
If multiple color space masters are created for different display technologies, then color accuracy on new displays is improved, but content production time and resources increase
Solution Approach 1:
The content production process is segmented into distinct mastering stages for different color spaces. Each color space version (film, digital cinema, video, HDR) is optimized independently but can be derived from common source material, allowing parallel processing and efficient resource utilization
Solution Approach 2:
The system changes color space parameters (primaries, transfer characteristics, luminance ranges) to match different display technologies. By systematically adjusting these parameters during mastering, multiple optimized versions can be created from a single source without requiring complete re-processing for each display type
Data Source
AI summary
A method and system for mastering and distributing enhanced color space content for different display devices (target color space) having display capabilities beyond that of CRT color space. The content creator(s) establishes base or reference color space and enhanced color space data for each target color space. The enhanced color space data is stored as metadata and transmitted over an enhanced color channel separately from the base/reference color space. Both the base/reference data and metadata are encoded before transmission and decoded on the consumer side either by a separate decoder or a display device having an integrated decoder. In other aspects of the invention, auxiliary data relating to the target color space, such as, for example, brightness, luminance, contrast and other display settings can be transmitted over the enhanced color channel and decoded to control the target color space settings (i.e., display settings). The color adjustment metadata could be included in the auxiliary data or maintained separate from the same depending on the desired implementation.