Application Research Of Police Face Recognition Video Monitor System Based On Biometric Technology Of Geometrical Matching And Split-merge

This paper studied biometric technology of geometrical matching and split-merge, and the applications of its in police face recognition video monitor system. This paper studied a method of geometrical matching and presented a complete set of algorithms for human face locating. In the section of preprocessing, special methods to enhance the contrast between face features and face skin and a local thresholding method were employed so that the result of the preprocessing was improved. In the section of image segmentation, the classical split-merge algorithm was applied, and the result improved by a grouping algorithm. In the section of face matching, an algorithm using a geometric model based on eyes and mouth was presented. Discussion was conducted on the construction of evaluation functions.Under Microsoft Windows XP and Microsoft Visual C++, a face locating software was developed using the algorithms mentioned above. Experiments showed that the software is capable of detect and locate front-view face(s) which is(are) big and clear enough.In the end, this paper probed into the advantages and disadvantages of the geometrical matching and the split-merge algorithms, and the applications of face recognition in police works, put forward suggestions to future work.