Chroma Enhancement for Display Power Saving
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Solution Overview
Problem
Existing display technologies face a tradeoff between enhancing image contrast and power consumption, with methods to improve contrast often leading to increased energy usage.
Innovation Solution
A computer-implemented method that increases the chroma of specific hues in an image, enhancing perceptual brightness without altering actual brightness, and reduces the lightness of certain hues to increase global contrast, thereby optimizing picture quality while reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If image enhancement techniques are applied to improve contrast and visual quality, then picture quality is improved, but power consumption increases
Solution Approach 1:
The patent applies different processing to different color channels (luma vs chroma) rather than uniform processing. By selectively enhancing only specific chroma components (Cb and Cr) while leaving luma unchanged, the system achieves contrast improvement in color perception without the power penalty of processing all pixel data, thus resolving the contradiction between image enhancement and power consumption.
Solution Approach 2:
The patent segments the image processing into distinct components: luma (brightness) and chroma (color). By separating these components and applying enhancement only to chroma, the system achieves visual improvement without the computational overhead of processing the entire image, thereby reducing power consumption while maintaining picture quality.
2Use of energy by moving object
If backlight is reduced to save power, then power consumption decreases, but visual appeal deteriorates
Solution Approach 1:
The patent enhances visual appeal through chroma enhancement (color saturation) rather than increasing brightness. By making colors more vivid through Cb and Cr component enhancement, the system maintains visual attractiveness without increasing backlight intensity, thus saving power while preserving visual appeal.
3Illumination intensity
If chroma of particular hues is increased to enhance perceptual brightness, then picture quality improves, but processing complexity increases
Solution Approach 1:
The patent further segments chroma processing by targeting only specific hues (those with significant visual perception effect) rather than processing all colors uniformly. This selective approach enhances perceptual brightness where it matters most while minimizing processing complexity by avoiding unnecessary computations on all color components.
Data Source
AI summary
One embodiment provides a computer-implemented method that includes increasing a chroma of one or more particular hues of an image for display on a display device. The one or more particular hues having at least a threshold magnitude of a visual perception effect based on a contrast between one or more colors and a background color. Perceptual brightness of the image is increased without changing actual brightness of the image. A lightness of at least one of two particular hues is reduced, by a specified amount, to increase global contrast between various hues.