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Keywords Face spoof attack detection Multiple-feature learning Capsule neural networks Hypergraph regularization A B S T R A C T Face authentication has been widely used in personal identification. However, face authentication systems can be attacked by fake images. Existing methods try to detect such attacks with different features. Among them, using color images become popular since it is flexible and generic. In this paper, a novel feature representation for face spoof attack detection,doi:10.2991/ijcis.d.210419.003 fatcat:dccocrdjxramtaek3k73c2yafi