Image Contour Extraction and Analysis Based on Edge Detection Algorithm

Qinghong Shao, Kangping Chen


With the development of science and technology, the requirements for the measurement accuracy of various workpiece parts are getting higher and higher. In this article, we combine the traditional edge detection algorithm and subpixel edge detection algorithm to analyze the three workpiece parts pictures  extracts the edge contour, and combines the sobel and canny algorithm to detect the edge contour. For the third photo taken under complex light, we constructed different series filters and parallel filters for filtering and denoising, and then extracted and analyzed the slices. The results show that our method achieves good results in contour extraction.


Sobel; Canny; Sub-Pixel; Ramer-Douglas-Peucker

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