Radiation Imaging Region Extraction via Pattern Matching
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Solution Overview
Problem
Portable radiation imaging apparatuses face challenges in maintaining a consistent positional relationship between the sensor unit and the tube unit during surgical operations, requiring frequent image capture and extraction of a region of interest, which can affect diagnostic accuracy due to variability in the extraction position and cumbersome procedures.
Innovation Solution
A radiation imaging apparatus that captures images, decides and extracts regions of interest, searches for similar forms in subsequent images, and displays them enlarged, using pattern matching and affine transformation to maintain consistent image analysis and display, thereby improving diagnostic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual handling of the detection unit is used in portable radiation imaging apparatus, then the apparatus provides convenience and portability, but the positional relationship between sensor unit and tube unit changes for every imaging operation, requiring frequent image capture and region extraction which is cumbersome and affects diagnostic accuracy
Solution Approach 1:
The system performs preliminary actions by capturing reference images at multiple positions before the actual imaging operation. These reference images are used to pre-calculate the positional relationship between the sensor unit and tube unit, allowing the system to maintain consistent image analysis and display without requiring repeated manual positioning adjustments during surgery.
Solution Approach 2:
The system uses feedback from the reference images to automatically adjust and maintain consistent image processing. By comparing the reference images with subsequent images, the system can compensate for positional changes and maintain diagnostic accuracy, creating a closed-loop system that adapts to manual handling variations.
2Reliability
If image capture and region extraction are performed multiple times for every imaging operation, then the system adapts to positional changes, but the procedure becomes cumbersome and time-consuming
Solution Approach 1:
The system performs all necessary image capture and region extraction operations in advance before the actual imaging procedure. By capturing reference images and pre-processing them to determine the optimal region of interest and processing parameters, the system eliminates the need for repeated manual operations during surgery, significantly improving operational efficiency while maintaining reliability.
3Adaptability or versatility
If the extraction position of the assistant varies for each image capture, then the system can adapt to different imaging conditions, but this variability affects the determination made by the doctor
Solution Approach 1:
The system performs self-service by automatically determining the optimal extraction position and processing parameters based on the reference images and current imaging conditions. This eliminates the need for manual intervention in the extraction process, ensuring consistent and objective determination that improves diagnostic accuracy while maintaining adaptability to different imaging scenarios.
Data Source
AI summary
A radiation imaging apparatus comprising: an image capture unit capturing a radiation image; a first decision unit deciding, as a first region of interest, a region of interest from a region of a first radiation image; a first extraction unit extracting the first region of interest from the first radiation image; a form decision unit deciding a first form from the first region of interest; a first display unit enlarging and displaying the first region of interest; a first search unit searching a region of a second radiation image for a second form similar to the first form; a second decision unit deciding a second region of interest from the second radiation image so as to include the second form; a second extraction unit extracting the second region of interest from the second radiation image; and a second display unit enlarging and displaying the second region of interest.