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What do the 1D filters represent when using imfilter?
I am reading the source code of an algorithm that is used to process an image. It contains the following lines of code imfilter...

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How do I calculate the directional derivative of an image in the north, east, west and south directions?
To implement the anisotropic diffusion of Perona and Malik (1987), we can use an explicit scheme (Euler forward method), where t...

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