How to find the Magnitude and Phase Spectrum of Sobel, Roberts etc. etc. Mask of Image Processing using MATHEMATICA 9.0 platform....
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You can find most of the definitions for these filters by googling, and once you know the definition it can be put directly into the
Edit: phase information
To get the phase of the gradient, one could use
The default method is the Prewitt filter (if you don't specify any
This does the convolution in each color channel. It may make more sense to first convert to grayscale:
You can simply use
or any other plotting function you like: