Scalable Color Management with Layered Metadata for Display Fidelity

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Solution Overview

Problem

Existing image and video rendering technologies fail to accurately maintain the original appearance of video content across displays with differing capabilities, leading to noticeable distortions and artifacts due to inadequate handling of metadata.

Innovation Solution

A scalable color management system that employs varying levels of metadata to adjust image processing based on display characteristics, using metadata to predict and adaptively calculate color management parameters, ensuring faithful rendering of the original intent.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If metadata is associated with image data, then color management processing accuracy is improved, but device complexity increases

Engineering Contradiction:
Improvecolor management processing accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The metadata is divided into multiple levels (Level 1, Level 2, Level 3) with increasing detail. Level 1 provides basic display characteristics, Level 2 adds content-specific information, and Level 3 includes advanced color management data. This segmentation allows the system to handle metadata in manageable portions, improving accuracy without overwhelming complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system processes metadata in partial levels rather than requiring complete metadata sets. When Level 1 metadata is available, basic color management is applied. When Level 2 or Level 3 metadata becomes available, more sophisticated processing is applied. This partial action approach allows progressive improvement of accuracy without requiring full metadata processing capacity always.

Inventive Principle:
Principle #16Partial or excessive action

2Manufacturing precision

If multiple levels of metadata are processed, then rendering fidelity is improved, but processing time increases

Engineering Contradiction:
Improverendering fidelityVSAvoidprocessing time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The color management processing is made dynamic by adjusting the level of metadata processing based on availability and requirements. The system dynamically selects which metadata levels to process, allowing faster processing when only basic levels are needed and more thorough processing when higher levels are available, thus optimizing the trade-off between fidelity and time.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Basic color management parameters are pre-calculated from Level 1 metadata in advance, so that when higher level metadata becomes available, only the additional refinements need to be computed. This preliminary action reduces the processing time required to achieve high fidelity rendering.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If adaptive parameter calculation is performed, then rendering accuracy is improved, but computational load increases

Engineering Contradiction:
Improverendering accuracyVSAvoidcomputational load
Core Design Contradiction:
Measurement precisionVSPower

Solution Approach 1:

The system changes the parameters used in color management calculations based on the metadata level available. Different mathematical models and parameter sets are applied at different metadata levels, allowing accurate rendering without always using the most computationally intensive methods. This enables adaptive computational load matching the available information.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12418667B2Scalable systems for controlling color management comprising varying levels of metadata
Publication Date: 2025.09.16 DOLBY LABORATORIES LICENSING CORP
  • US12418667B2 patent drawing
  • US12418667B2 patent drawing
  • US12418667B2 patent drawing

AI summary

Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.