基于3D模型的景观建筑物全景纹理映射仿真  

Simulation of Panoramic Texture Mapping of Landscape Buildings Based on 3D Model

作　　者：张秋敏 曹治[2] ZHANG Qiu-min;CAO Zhi(Jiangxi Institute of Applied Science and Technology,Architecture Engineering College,Nanchang Jiangxi 330100,China;Nanchang Hangkong University,Nanchang Jiangxi 330000,China)

机构地区：[1]江西应用科技学院建筑工程学院,江西南昌330100 [2]南昌航空大学,江西南昌330000

出　　处：《计算机仿真》2023年第9期197-201,共5页Computer Simulation

摘　　要：数据噪声和点云数据拼接效果均会影响3D模型的构建效果,为提升模型纹理映射效果,降低平面误差,提出城市景观建筑物全景3D模型纹理映射方法。对点云数据展开预处理,线扫描数据去噪后过滤离散点云数据,通过迭代操作去除噪声点,并采用ICP算法对点云数据展开精准拼接。利用半球面等比约束球面映射算法对模型展开纹理映射操作,通过不断调整倍数大小均匀控制球面纹理映射的覆盖范围,完成城市景观建筑物全景3D模型纹理映射。仿真结果表明,所提方法可以高效完成城市景观建筑物全景3D模型纹理映射,且不会出现模型缺失、扭曲、变形、失真和粗糙问题,说明该方法性能较好。Data noise and point cloud data splicing effect may affect the construction of 3D model.In order to improve the texture mapping effect and reduce the plane eror,this paper presented a panoramic texture mapping method of urban landscape buildings based on 3D model.At first,we preprocessed the point cloud data,and filtered the discrete point cloud data after denoising the line-scanning data.And then,we removed the noise points iteratively.Meanwhile,we used the ICP algorithm to accurately splice these point cloud data.Moreover,we used the spherical mapping algorithm based on hemispherical constraint to map the texture of the model.Next,we controlled the coverage of spherical texture mapping uniformly by constantly adjusting the multiple size,thus completing the texture mapping based on panoramic 3D model.Simulation results show that the proposed method can efficiently complete the texture mapping for the panoramic 3D model of urban landscape buildings,without the problems of model missing,deformation,distortion and roughness.Therefore,the method has good performance.

关 键 词：纹理映射 点云数据 离散点云数据 等比约束球面映射 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]