I am trying to follow the tutorial for WML released at the Summer 2010 programming week and I am running into some problems with the format of the training images. None of the training images seem to be in a format that Slicer3 recognizes. Additionally, the formats do not match those in the train_postfix.txt file. Is there a different release of training data? If not, could you please explain what the difference is between these three training images:
.lesion.mask.hdr
.lesion.mask.open.hdr
.lesion.premask.hdr

Thanks for your help