Using the Canny edge detection algorithm. Include the following steps: 1, smooth image with a Gaussian filter. 2, first-order partial derivatives of finite-difference calculation of the magnitude and direction of the gradient. 3, the gradient amplitude, non-maxima suppression. 4, dual-threshold algorithm to detect and connect edge. 5 Gaussian smoothing function

例5-1
.....\edge.cpp
.....\edge.dsp
.....\edge.dsw
.....\fruits.jpg
.....\Makefile

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