Hue Rotation Processing for Dichromat Color Identification
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Solution Overview
Problem
Dichromats require learning and experience to understand the hue of color images processed to be easily identifiable, as existing techniques convert color difference signals in a way that complicates identification.
Innovation Solution
An image processing apparatus that acquires color images, performs hue rotation and mixing processing on color difference signals to create a color image that can be easily identified by dichromats, allowing for reverse hue rotation and display as a color-converted image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If color difference signals are converted to make color pairs easy to identify for dichromats, then color identification becomes easier, but the original hue information is lost requiring learning and experience to understand the original image
Solution Approach 1:
The patent applies parameter changes by rotating the color difference signals in the color space at a specific rotation angle. This transformation changes the parameters (color difference signal values) while preserving the underlying hue information through the reversible rotation operation, allowing dichromats to easily identify colors without losing original hue relationships
Solution Approach 2:
The patent creates a transformed copy of the color image with rotated color difference signals. This copied version presents colors in a simplified form easy for dichromats to identify, while the original image remains preserved and can be referenced to understand the original hue information without requiring learning
2Measurement precision
If color difference signals are mixed to simplify color identification for dichromats, then color distinction improves, but the processing complexity increases
Solution Approach 1:
The patent uses parameter changes through mixing processing that combines color difference signals with specific weighting coefficients. This approach improves color distinction for dichromats by adjusting the signal parameters while maintaining manageable processing complexity through systematic coefficient application
Solution Approach 2:
The patent introduces an intermediary mixing process that transforms color difference signals into a form suitable for dichromat perception. This intermediary step acts as a mediator between the original color signals and the dichromat's visual system, improving distinction without requiring complex end-to-end processing
Data Source
AI summary
Techniques are provided in which a “dichromat” (e.g., a color-blind person) is able to identify the hue of an object without determining the color difference signals that are applied to the original color image. Such features may be implemented by performing hue rotation processing on each pixel data of the original color image captured.