Color Conversion Parameter Correction for Print Gamut Mapping
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Solution Overview
Problem
Existing information processing apparatuses face challenges in effectively mapping colors from a digital original to a printer's color gamut, leading to color degradation and reduced color distinguishability.
Innovation Solution
The apparatus includes an obtaining unit for color information, a determination unit to assess the presence of specific colors, and conversion units for color conversion processing. It corrects conversion parameters to enhance color differences and reduce color degradation, prioritizing absolute color appearance based on user settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color conversion processing is executed to map colors from first color gamut to second color gamut, then colors can be reproduced by the printer, but color degradation occurs and color distinguishability is reduced
Solution Approach 1:
The patent applies parameter changes by adjusting conversion parameters in color conversion processing. When color degradation is detected (color difference between converted colors falls below a threshold), the system modifies the conversion parameters to increase the color difference, thereby maintaining color distinguishability while still mapping to the printer's color gamut.
Solution Approach 2:
The patent implements feedback by detecting color degradation through comparison of color differences before and after conversion. The determination unit evaluates whether color degradation has occurred, and the correction unit uses this feedback to adjust conversion parameters, creating a closed-loop system that maintains color quality.
2Manufacturing precision
If conversion parameters are adjusted to maintain color differences, then color distinguishability is improved, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by performing color conversion processing in a first state, then adjusting conversion parameters in a second state based on detected color degradation. This staged approach allows the system to handle color conversion efficiently while maintaining distinguishability without requiring overly complex processing throughout.
Data Source
AI summary
An information processing apparatus includes an obtaining unit which obtains first color information from an image that includes a pixel representing color information of a first color and a pixel representing color information of a second color. A determination unit determines whether the obtained first color information includes second color information. A conversion unit executes first color conversion processing on the image. A correction unit, in a case where a color difference between the third color and the fourth color is less than a predetermined threshold, corrects a conversion parameter in the first color conversion processing such that a color obtained by converting the first color is a seventh color which is different from the third color and whose color difference from the fourth color is greater than the color difference between the third color and the fourth color.