The present invention belongs to a field of image processing and mode recognition and discloses a face authentication method and device. The method comprises: acquiring a face image sample pair, dividing the acquired face image sample pair into blocks, and calculating based on the acquired blocks a local gray scale feature vector and a local histograms of oriented gradients (HOG) vector, calculating and determining whether the face image sample pair belong to a same person according to the calculated local gray scale feature vector and local HOG vector. The face authentication method and device of the present invention can effectively eliminate disturbing factors such as light, expressions and ages, and improve face recognition accuracy remarkably.
FACE AUTHENTICATION METHOD AND DEVICE