基于虚拟现实技术的犯罪现场三维重建分析

Analysis of 3D Reconstruction of Crime Scene Based on Virtual Reality Technology

针对传统犯罪现场勘查取证难度大,重建低效的缺陷,将三维激光扫描与虚拟现实技术相融合来构建犯罪现场的三维模型。基于激光三维扫描仪获得犯罪现场精确的3D点云数据,根据设定的阈值去除点云数据的异常点,采用拉普拉斯法或平均曲率流法进行点云光滑处理,消除局部噪声。实例验证表明:通过将虚拟现实技术应用于犯罪现场三维模型重建中,能实现对犯罪现场的精确建模和犯罪过程模拟演示。

In view of the difficulty of traditional crime scene investigation and evidence collection and the reconstruction of inefficient defects, 3 D laser scanning and virtual reality technology are combined to construct a 3 D model of crime scene. based on laser 3 d scanner to obtain accurate 3 D point cloud data at the crime scene, remove the abnormal points of point cloud data according to the set threshold, and use laplace method or average curvature flow method to smooth the point cloud to eliminate local noise. The example shows that by applying virtual reality technology to the reconstruction of crime scene 3 D model, the accurate modeling of crime scene and the demonstration of crime process simulation can be realized.