fix: Initialize ImageSimilarity::_Mask [Registration]
fix: Initialize ImageSimilarity::_Mask [Registration]

BioMedIA/MIRTK,schuhschuh/MIRTK,schuhschuh/MIRTK,schuhschuh/MIRTK,stefanpsz/MIRTK,stefanpsz/MIRTK,BioMedIA/MIRTK,BioMedIA/MIRTK,stefanpsz/MIRTK,BioMedIA/MIRTK,stefanpsz/MIRTK,schuhschuh/MIRTK