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A conventional biometric authentication system is often designed to distinguish genuine accesses from zero-effort impostor attacks. However, when operating in an adversarial environment, the system has to be robust against presentation attacks such as spoofing. An effective solution to reduce the impact of spoofing attack is to consider both the matching score and liveness score when making the accept/reject...
This paper proposes a novel face image descriptor called local contourlet combined patterns (LCCP), based on the Non-Subsampled Contourlet Transform (NSCT), for face recognition. NSCT is a multiresolution analysis tool and can capture image information at multiple scales, orientations, and frequency bands. To adapt to the NSCT filter bank, a new encoding method named mean-based contrast patterns (MCP)...
Face recognition at a distance is still a challenging problem due to the low resolution face images resulting from the remote distance. To motivate researches on the problem and make up for the shortage of existing databases, we introduce MDCI database in this paper. The database contains 677 videos and 9734 pictures from 155 subjects captured by five different cameras, at four kinds of distances...
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