buguen/pylayers — pull request #63 by mlaaraie (2012-12-12 08:50:04+00:00)
Title: Update signature.py

replace image by image2 in signature.py to fix some bugs in ray computation
adding 2 functions in pyutil.py to manage block arrays
fixing a bug in backtrace in signature.py
adding two methods to save and show 2D rays (show_rays2D and sigstorays)