Image Processor Hue Correction via Continuous Parameter Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image processing in the HSV color space restricts correction flexibility, leading to drastic color differences at hue region boundaries, as correction values are approximated to zero, limiting the ability to maintain natural color representation.
Innovation Solution
An image processor that includes a hue region judging section and a converting section, which calculates correction values using reference values and difference values to allow arbitrary setting of correction values at hue region boundaries, enabling flexible hue and saturation corrections without drastic color differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the correction value is approximated to zero at the boundary of a hue region to prevent drastic color differences, then color continuity is improved, but correction flexibility is restricted
Solution Approach 1:
The patent changes the parameter calculation method by introducing a continuous correction value formula that considers the distance from the boundary. Instead of setting correction values to zero at boundaries, the patent uses a formula where the correction value is calculated based on the absolute difference between the hue and reference values, scaled by a factor that ensures continuity. This allows non-zero correction values at boundaries while maintaining color continuity, thereby resolving the contradiction between color continuity and correction flexibility.
2Adaptability or versatility
If the correction value is set to an arbitrary non-zero value at the boundary between hue regions, then correction flexibility is improved, but drastic color differences occur at the boundary
Solution Approach 1:
The patent modifies the correction value parameter by introducing a continuous calculation formula that depends on the hue distance from reference values. The formula ensures that correction values change smoothly across hue region boundaries rather than jumping to arbitrary values. This continuous parameter change prevents drastic color differences while allowing flexible non-zero correction values, thus resolving the contradiction between correction flexibility and color continuity.
3Manufacturing precision
If multiple hue regions are corrected with different correction values, then hue correction precision is improved, but boundary color discontinuity occurs
Solution Approach 1:
The patent implements continuous parameter changes across hue regions by using a correction value formula that considers the absolute difference between the current hue and reference hues. This formula ensures that correction values transition smoothly between adjacent hue regions, eliminating boundary discontinuities while maintaining precise correction for each region. The continuous parameter approach allows different correction values for different regions without causing boundary artifacts, resolving the contradiction between precision and continuity.
Data Source
AI summary
An image processor includes a hue region judging section judging which one of a plurality of hue regions corresponds to a hue and a converting section obtaining a correction value by using the hue to correct the hue based on the correction value. The converting section obtains a first difference value by using a difference between the hue and a first reference value, obtains a second difference value by using a difference between a second reference value and the first difference value, and obtains the correction value by using the second difference value. The hue is corrected based on the correction value.