Display Brightness Compensation for Dynamic Halo Control
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Solution Overview
Problem
Conventional display devices increase halo sizes for all objects in an image, including those that do not need it, leading to poor image quality.
Innovation Solution
A display device and method that analyze the change areas between frame image signals to identify specific change patterns, adjusting brightness in compensation areas adjacent to these changes to enhance the halo effect only for dynamic objects while reducing it for static objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If halo size is increased for all objects to compensate for brightness and stability, then brightness stability is improved, but image quality deteriorates due to unnecessary halos on static objects
Solution Approach 1:
The patent applies local quality by differentiating between static and dynamic objects in the image. The processing circuit identifies motion status and applies different halo processing strategies: dynamic objects receive halo enhancement for brightness stability, while static objects do not receive halo enhancement to maintain image quality. This selective approach ensures that brightness stability is improved only where necessary without degrading overall image quality.
2Stability of the object's composition
If halo size is increased for dynamic objects to maintain brightness stability, then brightness stability is improved, but image complexity increases due to selective processing requirements
Solution Approach 1:
The patent applies segmentation by dividing the image processing into distinct stages: motion detection stage, halo processing stage for dynamic objects, and bypass stage for static objects. The processing circuit is segmented into functional modules that handle different object types differently. This segmentation allows the system to achieve brightness stability for dynamic objects while keeping the overall processing complexity manageable through modular design.
Data Source
AI summary
A method for displaying an image using a display device includes the following steps. An initial image is provided. The initial image includes a plurality of frame image signals. Each of the frame image signals includes a brightness signal corresponding to the brightness. The change area between the (N−1)th frame image signal and the Nth frame image signal is analyzed, wherein the change area includes a first change area and a second change area, the brightness in the first change area changes from large to small, and the brightness in the second change area changes from small to large. The brightness of the compensation area adjacent to the second change area in the Nth frame image signal is increased. When displaying the Nth frame image, the display device receives the Nth frame image signal and the brightness signal of the compensation area adjacent to the second change area.