How can I compute the pixel difference at each gradient direction of an edge image I satisfying threshold??

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Ram
Ram 2016-7-5
评论： Ram 2016-7-15
I need Mat-lab code to compute pixel difference for edge image at each angle

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Image Analyst
Image Analyst 2016-7-5
imgradient() or imgradientxy().
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Ram
Ram 2016-7-8
编辑：Ram 2016-7-8
please can give coding part of it i want to apply thresholding while taking pixel differnce of edge pixels and also way to find pixel difference along gradient direction

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