I wonder who and why would use the feature? These matrices are slow. Many kernels used in practice are separable https://blogs.mathworks.com/steve/2006/11/28/s

I wonder who and why would use the feature? These matrices are slow. Many kernels used in practice are separable https://blogs.mathworks.com/steve/2006/11/28/separable-convolution-part-2/ 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.