ENH: Improve filenames generated when splitting using CropImage
ENH: Improve filenames generated when splitting using CropImage

thewtex/TubeTK,thewtex/TubeTK,thewtex/TubeTK,KitwareMedical/TubeTK,thewtex/TubeTK,KitwareMedical/ITKTubeTK,aylward/ITKTubeTK,KitwareMedical/ITKTubeTK,KitwareMedical/TubeTK,aylward/ITKTubeTK,aylward/ITKTubeTK,KitwareMedical/TubeTK,KitwareMedical/TubeTK,KitwareMedical/ITKTubeTK,aylward/ITKTubeTK,KitwareMedical/ITKTubeTK