Can Chimeric Persons Be Used in Multimodal Biometric Authentication Experiments?

Combining multiple information sources, typically from several data streams is a very promising approach, both in experiments and to some extents in various real-life applications. A system that uses more than one behavioral and physiological characteristics to verify whether a person is who he/she claims to be is called a multimodal biometric authentication system. Due to lack of large true multimodal biometric datasets, the biometric trait of a user from a database is often combined with another different biometric trait of yet another user, thus creating a so-called a chimeric user. In the literature, this practice is justified based on the fact that the underlying biometric traits to be combined are assumed to be independent of each other given the user. To the best of our knowledge, there is no literature that approves or disapproves such practice. We study this topic from two aspects: 1) by clarifying the mentioned independence assumption and 2) by constructing a pool of chimeri...

• Type: Conference
• Year: 2005
• Where: MLMI
• Authors: Norman Poh, Samy Bengio
• Keywords: Biometric Traits, Chimeric User, MLMI 2005, Multimodal Biometric Authentication