2013-07-17 14:46:45 -0600 | asked a question | shock filtering and signum function Hi, I am trying to apply a shock filter on an image and wanted the equivalent of the sign function in Matlab to operate on my Laplacian. I am unable to figure out an easy way to apply such a function on a matrix. It seems that a signum function should be pretty straight forward to have been in the library but I couldn't find it. Any help would be great Thanks! |