Information Processing Color Mapping Correction Across Pages
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Solution Overview
Problem
Existing color mapping technologies in information processing systems often result in reduced chroma and color degradation, leading to incongruous color appearances across multiple pages, especially when mapping colors outside the printer's reproduction gamut.
Innovation Solution
An information processing apparatus that corrects color conversion parameters to increase the distance between colors in the color space, reducing color degradation by generating and applying color-degradation-corrected tables based on specific thresholds and user preferences, ensuring consistent color representation across pages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If color mapping is performed using conventional methods, then color conversion can be completed, but color degradation occurs and chroma is reduced
Solution Approach 1:
The patent performs preliminary analysis of the input image to detect color degradation patterns before final color conversion. By pre-identifying colors that are likely to degrade and determining appropriate correction parameters in advance, the system can apply targeted corrections during the conversion process, preventing color degradation rather than merely correcting it afterward.
Solution Approach 2:
The patent dynamically adjusts color conversion parameters based on the detected color degradation patterns. By changing the conversion parameters adaptively according to the specific image content and degradation characteristics, the system optimizes color accuracy for each conversion operation, thereby reducing color degradation while maintaining chroma.
2Productivity
If color conversion is performed without correction, then processing speed is maintained, but color consistency across multiple pages deteriorates
Solution Approach 1:
The patent performs preliminary analysis on the first image to determine optimal correction parameters before processing subsequent pages. By establishing the correction strategy in advance based on the first image's characteristics, the system can efficiently apply consistent corrections across multiple pages without repeating the full analysis process, thus maintaining both speed and consistency.
Solution Approach 2:
The patent creates a universal correction parameter set derived from the first image that can be applied across multiple pages. This multi-functional parameter set handles color consistency issues for all subsequent pages in the same binding order, ensuring uniform color appearance throughout the document while avoiding repeated processing overhead.
3Manufacturing precision
If correction parameters are adjusted to prevent color degradation, then color quality improves, but processing complexity increases
Solution Approach 1:
The patent segments the color conversion process into distinct stages: initial color degradation detection, correction parameter determination, and targeted parameter adjustment. By dividing the complex correction process into manageable segments, the system can apply sophisticated corrections only where needed rather than processing all colors uniformly, thus improving color quality while controlling processing complexity.
Solution Approach 2:
The patent applies correction parameters locally to specific color ranges or regions where degradation is detected, rather than uniformly adjusting all colors in the image. This localized approach allows precise correction of problematic colors while leaving other colors unchanged, improving overall color quality without unnecessarily increasing processing complexity for the entire image.
Data Source
AI summary
There is provided with an information processing apparatus. A first obtaining unit obtains first color information from a first image, which includes a pixel representing color information of a first color defined in a first color gamut and a pixel representing color information of a second color defined in the first color gamut. A first correction unit, in a case where a color difference between a third color defined in a second color gamut and a fourth color defined in the second color gamut is less than a predetermined threshold, corrects a first conversion parameter for the color conversion processing such that a color obtained by converting the first color is a fifth color. A conversion unit performs color conversion processing in which the corrected first conversion parameter is used on a second image different from the first image.