Face and iris image fusion and recognition method based on hierarchical structure

The invention relates to a face and iris image fusion and recognition method based on a hierarchical structure, which comprises a registration step R and a recognition step S, wherein in the registration step R, after a feature extraction link R1 for face and iris images of a registered user is carried out, the images are stored in a registration database; and in the recognition step S, the face and iris images are used for recognizing and searching on the basis of the given registration database. The method of the invention improves the accuracy, the usability and the searching efficiency of a biological feature recognition system and has excellent expansibility and compatibility. In the method, the biological feature recognition system based on face and iris fusion can effectively recognize remote pedestrians and has wide application prospects in airports, stations, banks and other safe occasions.