Relative Morph Match Rates (RMMRs).

Images were morphed using different morphing algorithms, pre-selected using embeddings of different FRSs or alternatively, randomly pre-selected, and verified using different FRSs. The RMMR corrects the MMPMR by the FNMR of the verification FRS (see Eq 4). The highest values row-wise are highlighted in bold, leaving out the quasi-diagonal elements, i.e., if pre-selection and verification FRSs coincided. Note that RMMR was calculated as a decimal fraction within the range [0;1].