Re: _mask_filter_result function

Hi Umesh, The function `_mask_filter_result` assigns all the boundary pixels to a 0 value. The reason for this is that applying filter kernels or edge-detection operators on an image may result in inconsistent values at boundary pixel because of padding mode used by scipy.ndimage.filters.convolve<http://scipy.ndimage.filters.convolvehttp://docs.scipy.org/doc/scipy/referen...>. I hope that clears your doubt. Thank you. Regards, Ankit Agrawal, Communication and Signal Processing, IIT Bombay.