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A comment on GIMP Convolution Matrix.
These matrices are slow. Many kernels used in practice are separable https://blogs.mathworks.com/steve/2006/11/28/separable-convo... and therefore much faster to compute than a generic convolution matrix.
Also the UI is hard to use. 25 edit boxes is a lot.
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These matrices are slow. Many kernels used in practice are separable https://blogs.mathworks.com/steve/2006/11/28/separable-convo... and therefore much faster to compute than a generic convolution matrix.
Also the UI is hard to use. 25 edit boxes is a lot.