Canny Edge Detector
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Canny edge detection operator was developed by John F. Canny in 1986 and uses a multi-stage algorithm to detect a wide range of edges in images. Most importantly, Canny also produced a computational theory of edge detection explaining why the technique works.To satisfy these requirements Canny used the calculus of variations a technique which finds the function which optimizes a given functional. The optimal function in Canny''s detector is described by the sum of…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Canny edge detection operator was developed by John F. Canny in 1986 and uses a multi-stage algorithm to detect a wide range of edges in images. Most importantly, Canny also produced a computational theory of edge detection explaining why the technique works.To satisfy these requirements Canny used the calculus of variations a technique which finds the function which optimizes a given functional. The optimal function in Canny''s detector is described by the sum of four exponential terms, but can be approximated by the first derivative of a Gaussian.