Design And Implement Of Shoe Sole Print Comparison And Analyzing System

This paper is developed from the subject "Computer management and query/search system suitable for pratical use on the archives of shoe sole print and footprint in crime scene" , which is part of "the research of the footprint examination science " , a key science subject of the public security official department. It establishes a practical comparison and analyzing system for shoe sole print by employing image processing technology. The design work of the system is presented in this paper, as well as the principles and implementation of some correlative modules.The design of the system accords with 《the management for footprint shoe sole for temporary provision 》 enacted by the ministry of public security. It fulfills the demand on computer management and query/match system of foot and shoe sole print based on the network, and is mainly applied in the public security official criminalistics technique section. Main functions: footprint catching, image processing, labeling, footprint analysis, footprint input, footprint query, footprint connecting, statistics, footprint output, information prompt. It has a convenient user interface.The system, supported by computer network and image processing technology, provides convenience, reliability and scientificity for the management of foot and shoe sole print. Its outstanding features includes: 1, the definition of shoe sole print applies segmentation approach by region and layer, which decreases the possibilities of misunderstanding and promotes the efficiency. 2, comprehensive ability in image processing increases the usage factor of footprint in case. 3, the regulation of input improves the quality of work.Further, the implementation of image processing algorithm of the system is discussed in this paper, meanwhile, the theory of it is also introduced.Based on these knowledge, the system is realized with MATLAB And Visual C++ 6. 0. The system has a satisfying effect. The research presented in this paper plays an important role in crime investigation and justifies its usefulness.The system is successfully applied in Dalian Public Security Bureau and the subsidiaries. In present, a network is established online with Shenyang Public Security Bureau, which contributes greatly to our pratical work. We believe that with its widespread use our work will be more and more effective and convenient.