How can I get the accumulator matrix from a Hough Transform?
During the hough transform a sinogram image is created from the source image. This 'sinogram' or 'accumulator' seems to be discarded after the transform. I want to keep it. Where is it?
currently, you can't, it is indeed discarded. you will have to modify the api, and recompile opencv libs, or come up with your own code.