Gradient Detection for Simultaneous Contrast Enhancement

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Solution Overview

Problem

Existing display technologies face a trade-off between enhancing perceived contrast and reducing power consumption, with most methods either increasing power usage for better image quality or reducing quality for lower power consumption.

Innovation Solution

A computer-implemented method that receives an input image, performs gradient detection to determine outlines, and enhances perceived contrast based on these outlines, utilizing techniques such as simultaneous contrast and the Bartleson-Breneman effect to improve picture quality while maintaining or reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If image enhancement techniques are applied to improve picture quality and perceived contrast, then image quality is improved, but power consumption increases

Engineering Contradiction:

Improvepicture qualityVSAvoidpower consumption

Core Design Contradiction:

Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The patent segments the image processing into selective gradient detection and outline-based enhancement, applying processing only to specific regions (edges and outlines) rather than the entire image. This selective approach reduces the computational load and power consumption while maintaining picture quality improvement in critical areas.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies enhancement techniques locally to identified outlines and edges rather than uniformly across the entire image. By concentrating processing power on boundary regions where contrast enhancement has the most visual impact, the system achieves picture quality improvement with minimized power consumption.

Inventive Principle:

Principle #3Local quality

2Use of energy by moving object

If backlight is reduced to save power, then power consumption decreases, but visual appeal and picture quality deteriorate

Engineering Contradiction:

Improvepower consumptionVSAvoidvisual appeal

Core Design Contradiction:

Use of energy by moving objectVSManufacturing precision

Solution Approach 1:

The patent uses gradient detection and outline enhancement to modify the luminance and contrast characteristics of image regions. By enhancing edges and boundaries through gradient-based processing, the system compensates for reduced backlight intensity, maintaining visual appeal while operating at lower power consumption levels.

Inventive Principle:

Principle #32Color changes

Data Source

PatentUS20250173847A1Simultaneous contrast based picture quality improvement for power saving

Publication Date: 2025.05.29 SAMSUNG ELECTRONICS CO LTD

AI summary

One embodiment provides a computer-implemented method that includes receiving an input image associated with a media content item. Gradient detection is performed to determine one or more outlines for the input image. Based on the one or more outlines, a perceived contrast associated with the input image is enhanced.