Display Device Brightness Region Differentiation
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Solution Overview
Problem
Existing display devices struggle to effectively distinguish and highlight relatively high-brightness and low-brightness regions in HDR images, as current techniques either fail to accurately depict these regions or require cumbersome user adjustments to settings.
Innovation Solution
A display device and method that utilize a processor and memory to analyze image brightness information, determine a setting range for colorization, and display pixels within this range differently from those outside it, ensuring high-brightness and low-brightness regions are easily identifiable through colorization or pattern differentiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a zebra pattern is displayed in all regions where brightness gradation value is at least a predetermined value, then high-brightness regions can be highlighted, but the user cannot distinguish relatively high-brightness regions from relatively low-brightness regions
Solution Approach 1:
The patent applies local quality by displaying different patterns in different brightness regions: a first pattern (e.g., zebra pattern) for pixels with brightness above a first threshold, and a second pattern (e.g., different zebra orientation or density) for pixels with brightness above a second threshold but below the first threshold. This allows simultaneous identification of both high-brightness and low-brightness regions within the highlighted area, resolving the contradiction by providing differentiated visual information for different brightness levels.
2Measurement precision
If brightness analysis is performed on HDR images with wide brightness range, then accurate brightness management is achieved, but the display complexity increases
Solution Approach 1:
The patent changes the parameter of brightness threshold values dynamically based on the HDR image characteristics. The display control unit determines first and second threshold values from the brightness information of the HDR image, and adjusts the pattern display accordingly. This allows accurate brightness region identification across the wide HDR brightness range while maintaining manageable display control through adaptive parameter adjustment rather than fixed complex rules.
Data Source
AI summary
A display device comprising: a display; and an image obtaining unit configured to obtain an image; and a display control unit configured to perform control such that a pixel having a brightness gradation value that is included within a setting range, which is a range of brightness gradation values and which is a range set to include at least a certain number of pixels in a target frame of the image, is displayed in the display in a display appearance different from that of a pixel having a brightness gradation value that is not included within the setting range in the target frame.