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PART|II Multimodal Signal Processing and Modelling
Other suggestions include the use of quality measures to improve
HCI device interoperability [43,44]. Such an approach is commonly
used in speaker verification [45] where different strategies are used
for different microphone types.
Last but not least, another promising direction in fusion is to con-
sider the reliability estimate of each biometric modality. In [46], the
estimated reliability for each biometric modality was used for combin-
ing decision-level decisions, whereas in [47–50], score-level fusion
was considered. However, in [47–49], the term ‘failure prediction’
was used instead. Such