how to compute pixel difference based upon gradient direction of an image

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Ram
Ram 2016-6-20
评论： Ram 2016-6-27
based on four different directions need to compute pixel difference satisfying threshold value

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Image Analyst
Image Analyst 2016-6-26
I don't understand your question. But you might start with imgradient() or imgradientxy().
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Ram
Ram 2016-6-27
for image 256*256 calculated edge pixel and corresponding gradient direction such as 0,45,-45,-90 now for every edge pixel i need to calculate pixel difference based upon their corresponding direction and if the difference satisfy threshold value then need to store those pixel values. Please help in this regard

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