Measurement-Based Color Management System Profile Generation
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Solution Overview
Problem
Current Color Management Systems (CMSs) face challenges in generating transform-based profiles from measurement-based profiles, particularly in networked environments where consistency across different CMS architectures is difficult to achieve, and existing solutions require user intervention or lack device-specific expertise.
Innovation Solution
A method and apparatus for a measurement-based CMS to generate transform-based profiles using parameterized color data and procedures, with a user-configurable reference Profile Connection Space (PCS) and user-selectable Gamut Mapping Model (GMM) and Device Model (DM), allowing for automated generation of AtoB and BtoA lookup tables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a measurement-based CMS generates transform-based profiles automatically, then productivity and consistency across different CMS architectures improve, but device complexity increases due to the need to handle both measurement-based and transform-based profile formats
Solution Approach 1:
The measurement-based CMS is designed to perform multiple functions: it can process measurement-based profiles directly and also generate transform-based profiles for compatibility with transform-based CMSs. This multi-functionality allows a single CMS architecture to serve multiple purposes, improving productivity while managing complexity through unified design.
Solution Approach 2:
The system introduces an intermediary profile generation mechanism that converts measurement-based profiles into transform-based profiles. This intermediary layer enables communication between different CMS architectures without requiring each system to handle all profile formats directly, thus managing complexity while enabling automated generation.
2Adaptability or versatility
If user-configurable reference PCS and user-selectable GMM/DM are provided, then adaptability and device-specific information usage improve, but ease of operation decreases due to additional configuration requirements
Solution Approach 1:
The system provides dynamic configuration options where users can select different reference PCS, gamut mapping models, and device models according to their specific needs. This dynamic adaptability allows the system to adjust to different device characteristics and requirements while maintaining a consistent core architecture.
Solution Approach 2:
The system allows users to change key parameters such as reference PCS characteristics, gamut mapping behavior, and device model selections. By enabling parameter changes rather than requiring complete system reconfiguration, the system achieves adaptability while simplifying the user interaction process.
3Manufacturing precision
If transform-based profiles are generated with full gamut mapping, then manufacturing precision and color accuracy improve, but processing time and computational resources increase
Solution Approach 1:
The system performs gamut mapping and transform calculations during the profile generation phase rather than during actual color processing. By completing the complex computational actions in advance during profile creation, the system achieves high color transformation accuracy while reducing processing time during actual image processing operations.
Solution Approach 2:
The system provides options for partial gamut mapping where users can select the level of precision required. For devices or applications where full gamut mapping is not necessary, the system can use simplified mapping approaches, reducing processing time while maintaining adequate color accuracy for the specific use case.
Data Source
AI summary
A method and apparatus for generating transform-based color profiles by a measurement-based Color Management System (CMS). The measurement-based CMS generates the transform-based profile wherein the measurement-based color system is parameterized by color data and procedures. The CMS may use a reference Profile Connection Space (PCS) loaded from a measurement profile, thus enabling user configuration of the generation process. The reference PCS may also be set to include a gamut that is appropriate for an eventual color-output device. In addition, a Gamut Mapping Model (GMM) used in the generation process is user-selectable as well as a Device Model (DM). The DM may also be supplied as a pluggable module. The CMS also features user-selectable mapping from an International Color Consortium (ICC) intent to a PCS profile and to a DM. The features of the CMS may be used in an application, stand-alone profiling tool or in an operating system utility.