Research on Image Edge Analysis and Application Based on Canny Algorithm
Changquan Huang, Guoxiang Wu, Zhenzhu Wang, Sicheng Song · 2023
This paper proposes edge contour extraction. Edge detection technology directly affects the contour extraction process. At the same time, the edge contour extraction scheme to eliminate the interference effects such as edge burrs and shadows is studied, and the number and length of edge contours are calculated. This paper analyzes from three problems perspectives: Problem l: Contains three cases. Picl_l: Read the original image through the Soble operator, apply the attenuation factor to the spline interpolation, and use the maximum between-class variance method. Picl_2: The filter performs a “frame filtering” operation on the image to obtain the highlighted map of “various features, ” and then uses the Sobel operator to analyze the image. Picl_3: Binarize the control threshold followed by box filtering, then use the Sobel operator for image edge recognition to get a preliminary image. Finally, the Canny operator is used to obtain the edge contour data. Problem 2: Because the camera imaging process is actually converted from the “world coordinate system” to the “camera coordinate system”, then projected onto the imaging plane and finally converted into the image pixel coordinate system. The original image is distorted due to various factors. Problem 3: First, process the subject data to form an image and generate corner points through MATLAB software. Then, the Canny algorithm is used to circle the sub-pixel edge of the image. Finally, the lengths of contour1 and contour2 are calculated.