Color-Contrasting Image Modification with LCH Color Spaces
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Solution Overview
Problem
Conventional image modification techniques struggle to efficiently adjust color spaces to achieve a desired contrast ratio while maintaining color attractiveness and avoiding unattractive or complementary colors, leading to suboptimal accessibility and visual appeal.
Innovation Solution
The use of enhanced color spaces such as LCH, LAB, and HSL to adjust color lightness and chroma independently, combined with exclusion lists to avoid unattractive colors, ensures a target contrast ratio is met while maintaining visual appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional image modification techniques are used to adjust color spaces, then the contrast ratio can be improved, but the visual appeal and color attractiveness deteriorate
Solution Approach 1:
The patent transforms colors from the RGB color space to the LCH (Lightness-Chroma-Hue) color space, where independent parameter adjustment is enabled. By changing the parameter representation system, the patent allows separate control of lightness and chroma to achieve desired contrast ratios while maintaining color attractiveness, resolving the contradiction between precision and aesthetic quality.
Solution Approach 2:
The patent applies different adjustment strategies to different color properties: lightness is adjusted to control contrast ratio, while chroma and hue are preserved or adjusted separately to maintain color attractiveness. This localized adjustment of different color qualities allows simultaneous optimization of both contrast and visual appeal.
2Reliability
If color adjustment is made to meet accessibility standards, then the accessibility is improved, but the visual appeal and attractiveness deteriorate
Solution Approach 1:
By converting to the LCH color space, the patent enables independent adjustment of the lightness parameter to meet accessibility contrast requirements while preserving chroma and hue parameters that determine visual attractiveness. This parameter separation allows accessibility compliance without sacrificing aesthetic quality.
Solution Approach 2:
The patent dynamically adjusts only the necessary parameters (lightness) to meet accessibility thresholds while keeping other parameters (chroma, hue) relatively stable or optimally adjusted. This dynamic, selective adjustment ensures accessibility is improved without uniformly degrading visual appeal across all color properties.
3Ease of operation
If conventional color adjustment methods are used, then the process is simple, but the ability to maintain both contrast ratio and color attractiveness is limited
Solution Approach 1:
The patent changes the parameter representation from RGB to LCH color space, where lightness, chroma, and hue are independent parameters. This transformation simplifies the adjustment process by allowing independent control of each parameter, providing precise control over both contrast ratio (lightness) and color attractiveness (chroma and hue) simultaneously.
Solution Approach 2:
The patent segments the color adjustment process into independent control of three parameters: lightness (for contrast), chroma (for color intensity), and hue (for color type). This segmentation allows precise and independent adjustment of each aspect, providing fine-grained control over the final visual appearance while maintaining ease of operation.
Data Source
AI summary
Systems, apparatuses and methods provide technology that identifies a first color for an area, adjusts a first color space of the first color to a second color space when a predetermined condition is met, identifies a second color of text that is to overlay the area and adjusts one or more of the first color or the second color so that a contrast ratio between the first and second colors meets a threshold contrast value. The technology further modifies an original image to include the text overlaid on the area to generate an adjusted image, where the one or more of the text and the area in the adjusted image includes the adjusted one or more of the first color or the second color, and transmits the adjusted image to a user device to be displayed.