Color Conversion Apparatus Single-Point Hue Selection
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Solution Overview
Problem
Conventional color conversion apparatuses require users to designate multiple positions to set a color conversion range, making the operation cumbersome, especially when only a single position is designated, resulting in limited and ineffective color conversion.
Innovation Solution
A color conversion apparatus that uses a pointing device to designate an input position, obtaining hue values and setting a conversion target range with the input position at its center, allowing for the adjustment of saturation, brightness, or hue of pixels within this range, enabling simple and effective color conversion of displayed images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple positions are designated to set color conversion range, then color conversion coverage is improved, but operation complexity increases
Solution Approach 1:
The patent applies local quality by setting different color conversion parameters for different hue ranges. Instead of uniformly converting all colors, the system identifies specific hue ranges (e.g., greenish colors) and applies conversion only to those ranges, leaving other color ranges unchanged. This resolves the contradiction by achieving targeted color conversion coverage without requiring multiple user designations across the entire image.
Solution Approach 2:
The patent changes color conversion parameters (hue, saturation, brightness) based on the designated position and predefined ranges. When a user designates a single position, the system automatically determines the appropriate hue range and applies parameter changes within that range, eliminating the need for users to manually set multiple positions while still achieving comprehensive color conversion coverage.
2Ease of operation
If single position is designated for color conversion, then operation simplicity is improved, but color conversion effectiveness deteriorates
Solution Approach 1:
The patent implements preliminary action by pre-defining hue ranges and color conversion parameters before user input. The system prepares conversion tables and threshold values in advance, so when a user designates a single position, the pre-prepared parameters are automatically applied to the appropriate hue range, ensuring effective color conversion without requiring multiple user designations.
Solution Approach 2:
The patent makes the color conversion system universal by creating a single designating operation that can handle multiple color conversion scenarios. The system determines the appropriate hue range and applies conversion parameters based on the designated position, allowing one operation to achieve comprehensive color conversion effectiveness across different color ranges without requiring multiple specialized operations.
3Adaptability or versatility
If color conversion range is expanded to cover more hues, then color conversion completeness is improved, but noise and unnatural color transitions increase
Solution Approach 1:
The patent applies local quality by setting different saturation levels for different portions within the hue range. The center portion (first range) receives full saturation conversion while outer portions (second range) receive reduced saturation conversion. This gradient approach maintains color conversion completeness while preventing unnatural transitions and noise at the boundaries of the conversion range.
Solution Approach 2:
The patent changes saturation parameters differently for different portions of the hue range. By applying parameter changes with varying degrees (full saturation for center portion, reduced saturation for outer portions), the system achieves complete color conversion coverage while maintaining natural color transitions and reducing noise through the gradual parameter variation.
Data Source
AI summary
A predetermined display image is displayed on a display device, and a hue of the display image corresponding to an input position obtained from a pointing device is obtained. A predetermined range having the obtained hue at a center thereof is set as a conversion target range, and at least one of saturation, brightness, and hue is changed with respect to a pixel of the display image which has a hue within the conversion target range to display a resultant image on the display device.