A detection method and system for searching imaging radius
By using gradient detection and linear statistics methods in endoscopic images, the radius of the effective imaging area is accurately detected, which solves the problem of invalid information interference in the prior art, and improves the imaging quality and image processing accuracy.
CN114663361BActive Publication Date: 2025-04-01NANJING TUGE HEALTHCARE CO LTD
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Patent Information
- Application Number
- CN202210207320.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-03-04
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2042-03-04
AI Technical Summary
Technical Problem
The prior art is difficult to accurately detect the radius of the effective imaging area during endoscopic imaging, resulting in invalid information interfering with the accuracy of the image processing algorithm.
Method used
The arc detection area and the center search area are drawn on the Y channel image of the YCbCr color space, the arc pixel points are determined by the gradient detection method, and a straight line is established based on these pixel points, and the number of straight lines is counted to determine the center and radius.
Benefits of technology
Accurate detection of the radius of the effective imaging area is achieved, invalid information interference is eliminated, and imaging quality and the accuracy of subsequent image processing modules are improved.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides a detection method and system for searching imaging radius. First, an arc detection area and a circle center search area are drawn on the Y channel image of the YCbCr color space; the grayscale values corresponding to the pixels whose grayscale values are less than the grayscale threshold in the arc detection area are set to zero to obtain image Y'; secondly, a gradient detection method is used to determine whether each pixel in image Y' is an arc pixel; and a straight line passing through each arc pixel is established; then the number of straight lines passing through each pixel in the circle center search area is counted, and the pixel with the most straight lines and the number of straight lines greater than the straight line threshold is selected as the circle center of the effective imaging area; finally, the radius of the effective imaging area is calculated based on the distance from the circle center of the effective imaging area to the arc pixel points corresponding to all the straight lines passing through the circle center. The present invention combines gradient detection with straight lines, and solves the problem of how to determine the effective imaging area during endoscopic imaging by counting the number of straight lines.
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