Understanding Canny Edge Detection and Contour Extraction

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This overview covers the fundamentals of image edges, including digital image intensity transitions and gradient analysis using Gaussian smoothing and Sobel derivatives. It delves into the Canny edge detection pipeline, detailing gradient candidates, non-maximum suppression, and the complete process with numerical examples. Additionally, it explores contours, their definitions, hierarchy, and practical applications, providing a comprehensive summary and references for further study.