Sub-pixel Layout Resampler for Display Edge Sharpness
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Solution Overview
Problem
Electronic displays with different sub-pixel layouts face challenges in maintaining perceived image quality when receiving image data in incompatible formats, leading to blurred edges and visual artifacts due to mismatched sub-pixel layouts and source formats.
Innovation Solution
A display pipeline with a sub-pixel layout resampler block that adapts filter parameters based on edge detection and high-frequency metrics to convert image data from source formats like RGB to display formats like GRGB, ensuring optimal luminance control and sharpness, while minimizing visual artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image data is displayed directly without format conversion, then device complexity is reduced, but perceived image quality deteriorates due to blurred edges and visual artifacts from layout mismatch
Solution Approach 1:
The patent introduces a sub-pixel layout resampler as an intermediary component between the image data source and the display pipeline. This resampler converts image data from source formats (like RGB) to display-specific formats (like GRGB) by filtering and interpolating pixel values, thereby matching the sub-pixel layout requirements of different displays without requiring complex display-specific processing at each stage
Solution Approach 2:
The resampler dynamically adjusts filter parameters such as filter coefficients, kernel sizes, and interpolation factors based on the detected sub-pixel layout and source format. By changing these parameters adaptively, the system optimizes the conversion process for different display configurations while maintaining a unified processing architecture
2Manufacturing precision
If filter parameters are not adapted to sub-pixel layout, then processing speed is maintained, but edge sharpness deteriorates due to blur artifacts
Solution Approach 1:
The system performs preliminary detection of sub-pixel layout characteristics and source format identification before the main image processing. This preliminary action allows the resampler to pre-configure optimal filter parameters for the specific display configuration, enabling fast and accurate edge preservation without requiring complex real-time adjustments during image rendering
3Adaptability or versatility
If display supports multiple sub-pixel layouts, then adaptability improves, but image quality consistency deteriorates due to layout-specific processing requirements
Solution Approach 1:
The resampler is designed as a universal component that handles multiple sub-pixel layouts (e.g., RGB, GRGB, offset variations) and source formats through a single unified architecture. By using configurable filter kernels and adaptive parameter adjustment, the same resampler can convert image data for different display types without requiring separate processing paths, thereby maintaining image quality consistency across diverse platforms
Data Source
AI summary
Systems and methods for improving perceived image quality of an electronic display, which includes a co-located sub-pixel that controls luminance of a first color component and an offset sub-pixel that controls luminance of a second color component. A display pipeline communicatively coupled to the electronic display determines image data, which indicates target luminance of the first, the second, and a third color component at an image pixel; determines edge parameters, which indicate whether an edge is expected to be present at the offset sub-pixel, based on a difference metric between a first image pixel block around the offset sub-pixel and a second image pixel block offset from the first image pixel block; and determines offset sub-pixel image data by filtering an image pixel group around the offset sub-pixel based at least in part on the edge parameters, wherein the offset sub-pixel image data indicates target luminance of the offset sub-pixel.