BUG: moved import Image (PIL/Pillow module) into edge_detection module because by default, user does not have this module (issue #58). In the future, replace Image with something else.
BUG: moved import Image (PIL/Pillow module) into edge_detection module because by default, user does not have this module (issue #58). In the future, replace Image with something else.

3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox