Research On The Platform Of Criminal Scenario Reconstruction

With the development of science and technology,the reconstruction of criminal scene has become one of the important means to collect evidence,detect crime and report work.The traditional method of criminal scene investigation is inefficient,subjective and limited,which cannot meet the needs of the contemporary world.The computer-technology-based case reconstruction technology can objectively reconstruct the complete details and clues at the criminal scene through computers,which is of great significance to the work of public security.Based on the actual needs of crime scene investigation for case scenario reconstruction,With the C++ programming language,the function and frame of the case scene reconstruction system platform are designed,and the system platform based on image sequence and 3D virtual computer is realized.Its main work and innovation are as follows:(1)The latitude-longitude correction and SURF algorithm are the focuses in the research,the submodules and procedures of scene reconstruction are able to be designed based on the image sequence,including image loading,conversion,correction,storage and display.In the man-machine interface of the system platform,the fast image stitching interface is designed to achieve the automatic splicing function,the fisheye image correction and image stitching are realized.(2)The spherical projection technology is adopted,so as to achieve the realistic criminal scene browsing and roaming,including panoramic image loading,smooth preview,case load function.People can take the 360 degree view of the crime scene according to personal needs.The browsing and roaming of the criminal scene are achieved.(3)According to the basic framework of OGRE 3D engine,the framework module is expanded.Realize the construction of 3D model,and build the 3D model loaded by tree structure;the interactive devices are used in the system platform to control and edit any object,and the functions of entity loading,scene loading and scene roaming are realized;the effect of 3D virtual case setting is demonstrated.The construction of three-dimensional virtual criminal scene is completed.(4)Achieve the building of system platform and system function.Firstly,the GDI+,OpenCV two-dimensional graphics development library and the MFC framework are fused to achieve the function of the fusion of fish eye image correction and image stitching.Secondly,the OpenGL 3D graphics development library and the MFC framework are fused to realize the crime scene browsing and roaming based on panoramic images.Then the OGRE 3D engine is integrated with the MFC framework to realize the reconstruction of the 3D virtual criminal scene.Finally,integrate the established system platform with the abovementioned three parts to achieve double reconstruction of case scenarios based on image sequence and 3D simulation to form a complete case scenario reconstruction system platform.