Under-Screen Camera Fringe Correction Using Depth-Based Parameters
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Solution Overview
Problem
Interference fringes generated by beams superposing on a target region due to phase delays cause poor image quality in under-screen camera modules.
Innovation Solution
A method for correcting interference fringes by obtaining correction parameter sets based on different photographing distances, calculating an average depth value, and adjusting pixel values using target correction parameters to align with the average depth value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beams are emitted through the display screen to illuminate the target region, then the under-screen camera module can capture infrared images, but interference fringes are generated due to beam superposition and phase delays, resulting in poor image quality
Solution Approach 1:
The patent converts the harmful interference fringes into beneficial correction parameters by first capturing images containing the fringe patterns, then using these fringe information to generate correction parameter sets that compensate for the interference effects in subsequent imaging operations
Solution Approach 2:
The patent performs preliminary correction by pre-obtaining correction parameter sets before actual imaging operations. These pre-calculated correction parameters are stored and applied during image capture to prevent interference fringes from degrading image quality in real-time
2Adaptability or versatility
If correction parameter sets are obtained for different photographing distances, then interference fringes can be corrected for various depths, but the system complexity increases due to multiple correction parameters
Solution Approach 1:
The patent implements dynamic adaptation by selecting different correction parameter sets based on the depth information of the target region. The system dynamically switches between pre-stored correction parameter sets corresponding to different photographing distances, allowing adaptive correction without requiring complex real-time calculation
Solution Approach 2:
The patent segments the correction parameter management by dividing the photographing distance range into multiple segments, with each segment having its own pre-calculated correction parameter set. This segmentation allows the system to handle different depth ranges independently, simplifying the overall parameter management complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves image quality by alleviating the effects of interference fringes through precise correction of pixel values based on the average depth value, enhancing image clarity.
Implementation Method 1
The plurality of beams meet and superpose on the target region to generate interference fringes
Implementation Method 2
some of the beams are directly emitted through the display screen, and the other beams have different phase delays due to reflection on the display screen
Data Source
AI summary
A method for correcting interference fringes includes: obtaining correction parameter sets of different photographing distances; obtaining a to-be-corrected image and calculating an average depth value of the to-be-corrected image; selecting a target correction parameter set corresponding to the average depth value from the correction parameter sets of different photographing distances; and correcting first pixel values of to-be-corrected pixels at the different coordinate positions in the to-be-corrected image according to different target correction parameters corresponding to the different coordinate positions in the target correction parameter set, to obtain a corrected image. Each of the correction parameter sets includes different correction parameters corresponding to different coordinate positions. The average depth value includes an average value of depth values corresponding to a plurality of to-be-corrected pixels in the to-be-corrected image.