Bimodal anti-spoofing system for mobile security

Abstract

Multi-modal biometric verification systems are in active development and show impressive performance nowadays. However, such systems need additional protection from spoofing attacks. In our paper we present full pipeline of anti-spoofing method (based on our previous work) for bimodal audiovisual verification system. This method allows to evaluate parameters of quality for a sequence of face images during a verification process. Based on this parameters it’s decided whether the data is suitable for processing by the standard method (fiducial points based audiovisual liveness detection, FALD). If the quality of data is not sufficient, then our system switches to a new algorithm (svm-based audiovisual liveness detection, SALD), which provides less protection quality, but is able to operate when FALD is unsuitable. To improve the quality of the FALD algorithm we have collected the special dataset. This dataset allows to get better reliability of the algorithm for searching of fiducial points on the user’s face image. Tests show that developed system can significantly improve the quality of anti-spoofing protection versus our previous work.