enh: Warn user of evaluate-similarity when overlap of images is empty
enh: Warn user of evaluate-similarity when overlap of images is empty

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