Face Anti-Spoofing Based on Dynamic Color Texture Analysis Using Local Directional Number Pattern

Face anti-spoofing is becoming increasingly indispensable for face recognition systems, which are vulnerable to various spoofing attacks performed using fake photos and videos. In this paper, a novel “LDN-TOP representation followed by ProCRC classification” pipeline for face anti-spoofing is proposed. We use local directional number pattern (LDN) with the derivative-Gaussian mask to capture detailed appearance information resisting illumination variations and noises, which can influence the texture pattern distribution. To further capture motion information, we extend LDN to a spatial-temporal variant named local directional number pattern from three orthogonal planes (LDN- TOP). The multi-scale LDN- TOP capturing complete information is extracted from color images to generate the feature vector with powerful representation capacity. Finally, the feature vector is fed into the probabilistic collaborative representation based classifier (ProCRC) for face anti-spoofing. Our method is evaluated on three challenging public datasets, namely CASIA FASD, Replay-Attack database, and UVAD database using sequence-based evaluation protocol. The experimental results show that our method can achieve promising performance with 0.37% EER on CASIA and 5.73% HTER on UVAD. The performance on Replay-Attack database is also competitive.

I. Introduction

Face recognition, as a new-fashioned technique for access control, has been wildly studied in the past decades and achieved satisfactory progress. It can identify the individuals accurately even outperforming human beings [1]. However, face recognition systems are still vulnerable to malicious spoofing attacks such as printed photo and replayed video attacks. So, it is vital for guaranteeing the security of face recognition systems to develop a robust countermeasure which is referred to as face anti -spoofing or face presentation attack detection.