Abnormal Pixel Correction for Multispectral Imaging
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Solution Overview
Problem
Existing image data processing technologies face challenges in generating high-quality multispectral images due to issues with abnormal pixels, such as saturation and failure, which affect the interference removal process and image quality.
Innovation Solution
An image data processing device and method that detects abnormal pixels by analyzing pixel values, corrects them based on peripheral pixel values, and generates images of spectrally separated wavelengths, excluding or correcting abnormal pixels to improve image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If abnormal pixels are not corrected, then image processing is simpler and faster, but image quality deteriorates due to saturation and failure affecting interference removal
Solution Approach 1:
The patent applies preliminary action by detecting and correcting abnormal pixels before the interference removal process. The abnormal pixel detection unit identifies pixels with values outside the predetermined range, and the correction unit replaces them with interpolated values from peripheral pixels before the main image processing proceeds, ensuring high-quality results without compromising processing efficiency
Solution Approach 2:
The patent extracts abnormal pixels from the image data through dedicated detection and correction units. By isolating and handling only the abnormal pixels separately from the normal pixels, the system removes the harmful effect of saturation and failure on the overall image processing while maintaining simplicity for the majority of normal pixels
2Reliability
If all pixels are processed uniformly, then processing is simpler, but image quality deteriorates due to abnormal pixels affecting interference removal
Solution Approach 1:
The patent applies local quality by treating abnormal pixels differently from normal pixels based on their specific characteristics. The detection unit identifies pixels with values outside the predetermined range, and the correction unit applies localized correction only to these abnormal pixels using peripheral pixel values, while leaving normal pixels unchanged. This ensures high image quality without unnecessary complexity for all pixels
3Reliability
If abnormal pixels are corrected using peripheral pixels, then image quality improves, but processing time increases
Solution Approach 1:
The patent applies partial action by correcting only the abnormal pixels that fall outside the predetermined value range, rather than processing all pixels uniformly. The detection unit identifies only the necessary pixels for correction, and the correction unit interpolates values only for these specific pixels using their peripheral neighbors, minimizing processing time while maintaining image quality
Data Source
AI summary
An image data processing device processes image data captured by an imaging device that includes an optical system which spectrally separates incident light and polarizes light with the spectrally separated wavelengths, and emits the polarized light in a specific direction and an imaging element including a plurality of pixel sets each of which includes different types of polarizers. The image data processing device performs processes of: acquiring the image data; detecting a pixel whose pixel value is out of a predetermined range as an abnormal pixel from the acquired image data; correcting a pixel value of the abnormal pixel on the basis of pixel values of peripheral pixels in a case in which the abnormal pixel is detected; and generating images of the spectrally separated wavelengths from the image data in which the pixel value of the abnormal pixel has been corrected when the abnormal pixel is detected.