Part of ants registration suite
Usage: ImageSetStatistics ImageDimension controlslist.txt outimage.nii whichstat {roi.nii} {imagelist2forsimilarityweightedstats.txt}
whichstat = 0:
median, 1: max prob appearance , 2: weighted mean appearance , 3: trimmed mean , 4 : max value , option 5 : similarity-weighted (must pass imagelist2 as well) else median , option 6 : same as similarity-weighted option 5 but the label corresponds to the image that provides the best local match ... useful if you want to MRF smooth these indices , option 7 : similar to 5 but expects the max-value to be stored in the ROI image and uses it to get the intensity ...
example:
ImageSetStatistics 3 imagelist.txt maxvalueimage.nii.gz 4
similarity weighted --- pass in a list of similarity images here which will be used to select the best label --- thus, number of similarity images must match the number of label images .