Photoelectric Pixel Correction Using a Crosstalk Matrix
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Solution Overview
Problem
Existing flaw correction methods in image processing deteriorate image quality due to reduced accuracy in correcting flaws, particularly in cases of cluster flaws caused by crosstalk in photoelectric conversion systems.
Innovation Solution
A processing apparatus that includes a first storage unit for array data based on pixel output values, a second storage unit for correction data, and a correction unit that calculates and applies correction values using a crosstalk matrix to improve flaw correction accuracy without leaving residual flaws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional flaw correction methods are used, then processing speed is maintained, but flaw correction accuracy deteriorates and image quality deteriorates
Solution Approach 1:
The patent segments the correction process by separating flaw detection and correction into distinct stages. The correction unit identifies flaw pixels based on threshold comparisons with surrounding pixels, then applies targeted correction only to detected flaws rather than processing the entire image uniformly, thereby improving correction accuracy without sacrificing processing efficiency
Solution Approach 2:
The patent applies local quality by using surrounding pixel values to determine correction amounts for specific flaw pixels. The correction amount is calculated based on the difference between the flaw pixel and its surrounding pixels, allowing each flaw to be corrected according to its local context rather than applying a uniform correction across the image
2Adaptability or versatility
If conventional flaw correction methods are used, then processing simplicity is maintained, but cluster flaws caused by crosstalk cannot be effectively corrected
Solution Approach 1:
The patent implements feedback by using the output values of surrounding pixels to determine the correction amount for flaw pixels. The correction process continuously references surrounding pixel values to adjust correction amounts, enabling the system to adapt to different flaw patterns including cluster flaws while maintaining a relatively simple correction unit structure
Data Source
AI summary
A processing apparatus includes a first storage unit for storing first array data that is based on output values of a plurality of pixels arranged in an array, a second storage unit having second array data stored therein to be used for correction of the output values from the plurality of pixels, and a correction unit including a calculation unit that corrects an output value of at least one pixel of the plurality of pixels based on the first array data and the second array data.