考虑视觉传达效果的震后区域三维图像虚拟重建

3D Reconstruction of Post-earthquake Area Images Considering Visual Communication Effect

摘要:

传统二维震害图像方法对震后区域进行研究时，由于其拍摄角度具有局限性，震后区域图像的视觉效果不理想。提出基于三维激光扫描技术的震后区域三维虚拟重建方法，采用三维激光扫描仪测量震后区域，获取该区域的点云数据，采用Cyclone软件合并点云数据后，得到震后区域拼接后的整体点云图，将该图点云数据进行去体外孤点、去噪声点以及点云取样等处理后实施封装，在封装的点云数据上采用Sketch模型实施贴图操作，实现视觉传达效果理想的震后区域三维图形的虚拟重建。实验证明，所提方法对震后区域的三维图像虚拟重建结果精度高、视觉效果好。

Abstract:

In studies of post-earthquake areas using the traditional methods of 2D seismic damage images, the visual effect of the image is not ideal because of the limited shooting angle. Therefore, a method of 3D virtual reconstruction of post-earthquake regions based on 3D laser scanning technology is proposed in this paper. The post-earthquake area is measured by a 3D laser scanner, and the point cloud data of the region is obtained. First, the Cyclone software is used to merge the point cloud data, and the whole point cloud image of the post-earthquake region is obtained, and then the point cloud data of the map are processed and encapsulated. Finally, a sketch model is used to implement the mapping on the point cloud data, and then the 3D image of the post-earthquake region can be virtually reconstructed with ideal visual communication effect. Experimental results show that the proposed method has high accuracy and good visual effect for 3D reconstruction of post-earthquake area images.