Optical Compensating System for Display Luminance Deviation
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Solution Overview
Problem
Large display panels face luminance deviations due to overlapping areas in multiple photographed images, leading to errors in compensation data and reduced image quality.
Innovation Solution
An optical compensating system and method that adjusts grayscale values in overlapping areas based on camera gamma values to generate accurate compensation data by capturing images at different grayscale levels and applying weights to reference luminance values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple photographed images are used to cover large display panels, then the coverage area is improved, but luminance deviation occurs in overlapping areas
Solution Approach 1:
The patent applies different processing methods to different regions of the photographed images. Specifically, overlapping areas are identified and processed separately from non-overlapping areas, with the overlapping areas having their luminance values adjusted based on camera gamma values to match adjacent regions. This local differentiation resolves the luminance deviation issue while maintaining comprehensive coverage.
Solution Approach 2:
The patent uses camera gamma values as feedback information to adjust the luminance of overlapping areas. By measuring the actual luminance response of the camera in different regions and using this feedback to correct the grayscale values in overlapping areas, the system achieves uniform luminance across the entire display panel while maintaining the benefits of multi-image coverage.
2Area of stationary object
If multiple photographed images are captured for large display panels, then the complete coverage is improved, but errors in compensation data occur
Solution Approach 1:
The patent introduces camera gamma values as an intermediary factor to mediate between the multiple photographed images and the final compensation data. By using camera gamma values to adjust and normalize the luminance measurements in overlapping areas, the system eliminates errors that would otherwise propagate through the compensation data generation process, ensuring high accuracy despite using multiple images.
3Manufacturing precision
If grayscale values are adjusted in overlapping areas, then luminance uniformity is improved, but processing complexity increases
Solution Approach 1:
The patent changes the parameter of grayscale values in overlapping areas by adjusting them based on camera gamma values. This parameter transformation is applied systematically across all overlapping regions, converting the complex problem of luminance uniformity into a manageable grayscale adjustment process that maintains consistency across the entire display panel.
Data Source
AI summary
Embodiments of the disclosure relate to an optical compensating system and method. Specifically, there may be provided an optical compensating method, comprising generating a first photographed image for a first area of a display panel including an overlapping area, generating a second photographed image for a second area of the display panel including the overlapping area, extracting a camera gamma value for the second area, calculating a reference grayscale value in the overlapping area, using the camera gamma value for the second area, generating a corrected luminance value of the overlapping area by applying weights on the basis of the position to the reference grayscale value, generating compensation data from the corrected luminance value, and transmitting the compensation data to a display device.