Radiation Imaging Pixel Defect Detection Merging
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Solution Overview
Problem
Existing radiation imaging apparatuses face challenges in efficiently detecting and distinguishing between defective pixels for image formation and dose detection, requiring separate methods for each type of pixel.
Innovation Solution
A radiation imaging apparatus is designed with a generation unit that produces two types of defective pixel information: one for image-taking pixels and another for dose detection pixels, using a plurality of pixels that convert radiation into electric signals, and employing a defect determination unit to generate image and dose detection defect maps based on standard deviation thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate methods are used to extract defective pixels in dose detection pixels and imaging pixels, then defective pixel detection can be performed for each pixel type, but the device complexity and processing time increase
Solution Approach 1:
The patent merges the defect extraction process for dose detection pixels and imaging pixels into a single unified method. The generation unit simultaneously generates both first defective pixel information (for imaging) and second defective pixel information (for dose detection) by comparing electric signals from the plurality of pixels against reference values, eliminating the need for separate extraction procedures while maintaining detection accuracy for both pixel types
2Reliability
If separate methods are used to extract defective pixels in dose detection pixels and imaging pixels, then each pixel type can be optimized for its specific function, but the processing time and productivity decrease
Solution Approach 1:
The patent implements preliminary action by having the generation unit prepare reference values for both dose detection and imaging pixel defects in advance. During operation, the system simultaneously compares electric signals against these pre-established references to generate both types of defective pixel information in a single processing step, thereby maintaining pixel-specific detection reliability while significantly improving processing efficiency and productivity
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
This approach allows for efficient generation of defective pixel information for both image-taking and dose detection, improving the accuracy and reliability of radiation imaging by identifying and correcting defective pixels effectively.
Implementation Method 1
a plurality of pixels arranged to convert radiation into an electric signal
Data Source
AI summary
Provided is a technology with which defective pixel information in taking a radiation image and defective pixel information in detecting a dose can be generated efficiently. Provided is a radiation imaging apparatus including: a plurality of pixels arranged to convert radiation into an electric signal; and a generation unit configured to generate, based on the electric signal obtained as a result of a conversion by the plurality of pixels, first defective pixel information indicating a defective pixel in taking a radiation image among the plurality of pixels, and second defective pixel information indicating a defective pixel in detecting a dose among the plurality of pixels.