Local Binary Patterns as an Image Preprocessing for Face Authentication

One of the major problem in face authentication systems is to deal with variations in illumination. In a realistic scenario, it is very likely that the lighting conditions of the probe image does not correspond to those of the gallery image, hence there is a need to handle such variations. In this work, we present a new preprocessing algorithm based on Local Binary Patterns (LBP): a texture representation is derived from the input face image before being forwarded to the classifier. The efficiency of the proposed approach is empirically demonstrated using both an appearance-based (LDA) and a feature-based (HMM) face authentication systems on two databases: BANCA and XM2VTS (with its darkened set). Conducted experiments show a significant improvement in terms of verification error rates and compare to results obtained with state-of-the-art preprocessing techniques.

• Type: Conference
• Year: 2006
• Where: FGR
• Authors: Guillaume Heusch, Yann Rodriguez, Sébastien Marcel
• Keywords: Face Authentication Systems, FGR 2006, Input Face Image, Local Binary Patterns