Color Conversion Matrix Creation for Display Color Matching
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Solution Overview
Problem
Existing color management technologies face challenges in automatically performing color matching when the color space of a display device significantly differs from the target color space, leading to color clipping and difficulties in adjusting conversion parameters.
Innovation Solution
A color conversion matrix creating device and program that automatically calculate color conversion parameters by determining conversion matrices between various color spaces, including a reference color space, a target color space, and a new target color space, minimizing color clipping through weighted arithmetic operations and colorimetric measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If conventional color management technology is used with significant color space differences, then color conversion parameters need manual adjustment, but this increases operational complexity and reduces automation
Solution Approach 1:
The invention transforms the fixed target color space into an adaptive new target color space by changing the parameters of the color space itself. The new target color space is determined based on the display device's actual color characteristics and a predetermined reference color space, allowing the system to automatically adapt to significant color space differences without manual parameter adjustment.
Solution Approach 2:
The invention introduces a new target color space as an intermediary between the display device's native color space and the original target color space. This intermediary color space serves as a bridge that enables automatic color conversion by providing a intermediate reference frame that accommodates both the device characteristics and the desired color appearance.
2Manufacturing precision
If conventional color conversion is applied with significant color space deviations, then color clipping occurs, but this degrades color accuracy
Solution Approach 1:
The invention applies preliminary anti-action by pre-calculating the new target color space based on the display device's color characteristics before performing color conversion. By determining the appropriate color space transformation in advance, the system prevents color clipping from occurring during the conversion process, thereby maintaining color accuracy without requiring post-processing corrections.
3Manufacturing precision
If the target color space is fixed and differs significantly from the display device color space, then proper color matching cannot be achieved, but changing the target color space requires complex recalibration
Solution Approach 1:
The invention applies dynamics by making the target color space adaptive rather than fixed. The new target color space is dynamically determined based on the specific display device's color characteristics and the reference color space, allowing the system to automatically adapt to different devices without requiring complex manual recalibration procedures for each color space transformation.
Data Source
AI summary
A color conversion matrix creating device determines a first matrix for color conversion between a color space of a display device and a reference color space, first color values on the reference color space corresponding to predetermined RGB colors on the color space of the display device, a second matrix for color conversion between a prescribed target color space and the reference color space, second color values on the prescribed target color space corresponding to the predetermined RGB colors, third color values on a new target color space based on the first and the second color values, a third matrix for color conversion between the new target color space and the reference color space based on the third color values, and a color conversion matrix for color conversion between the color space of the display device and the new target color space based on the first and the third matrices.