Research Of Data Integration Technology In Criminal System Based On Face Recognition

While the Ministry of Public Security and the Ministry of science and technology were bringing forward "strong police with science and technology" many times, melting the new technology and sharing the information system of all kinds in construction, realizing the linkage of "person, case, thing, field, organization five key elements "became an inevitable trend. Criminal investigate system based on face identification is arised at the historic moment under such situation. The system realizes the source collecting, handling, storing, inquiring, managing in an integral whole to an information processing. The data source is from accumulate case database,face database and sharing of systematic person face data information such as platform of the Heilongjiang province and two generation ID card.At present, the internal data of public security most probably is direction convergence, not realizing the transverse direction share and is short of the applying synthetically. Between various data base, there is short of necessary connection, "isolated island effect" was brought about police affairs information resources. And, in public security system, the now available information software was of different period and different point of view, so there exists various data form. Therefore, integrating the data, realizing the data share becomes the problem demanding prompt solution.Criminal investigate system based on face identification was analysised, and one of the questions of this system was data integration. The main difficulty of the data integrates lies in the data isomerism. realizing data integrating require that the data describe is in the unified form first. The thesis adopts XML to realize the integration of isomerism data, XML is such a language that self describes, commutative, be able to describe a data with the tree or graph. To enable system integrates method have much better general availability and platform independence, on the basis of analysis the theory and effect of the middleware technology, a XML-based data middleware model was brought forward in the thesis, the problem of isomerism data having been resolved very well, and the data sharing in criminal investigate system based on face identification was realized, manpower and material resources, financial resources was economized in maximum.