摘要
针对传统可变地形特征三维建模方法获取的地形特征模型逼真度不高的问题,提出一种基于三维激光扫描系统的灾害易发区大场景可变地形特征建模方法。首先利用三维激光扫描系统获取灾害易发区地形地貌特征图像,然后对获取的图像进行激光脉冲信号放大、转换以及图像去噪等处理,最后在处理好的数据基础上绘制线、面、体,实现“实景复制”,建立地形三维模型,完成灾害易发区大场景可变地形特征三维建模研究。结果表明:利用所提方法建立的可变地形特征三维模型逼真度较高,可高达96.5%,比传统三维建模方法分别提高6.1%、5.3%和8.2%,由此证明,基于三维激光扫描系统的建模方法具有一定可行性,为地质灾害防范提供了有效参考。
In order to solve the problem of low fidelity of traditional 3D modeling method,this article puts forward a modeling method of changeable terrain feature of large scene in disaster prone area based on 3D laser scanning system.Firstly,3D laser scanning system was used to search for the topographic and geomorphologic images in disaster-prone area.Secondly,theses images were amplified by laser pulse signal,and then they were converted and denoised.Finally,line,surface and body were drawn on the basis of the processed data,so that the live-action replication was achieved.Thus,3D modeling of changeable terrain features of large scene in disaster-prone area was completed by building 3D model of terrain.Simulation results show that,based on the proposed method,the fidelity of 3D model is higher,which has reached up to 96.5%.Respectively,it is 6.1%,5.3% and 8.2% higher than the traditional three-dimensional modeling method.Therefore,the modeling method based on 3D laser scanning system is feasible,which provides an effective reference for geological disaster prevention.
作者
苏晨琛
刘海砚
SU Chen-Chen;LIU Hai-yan(Institute Engineering University,Zhengzhou Henan 450001,China)
出处
《计算机仿真》
北大核心
2021年第2期210-213,257,共5页
Computer Simulation
关键词
灾害易发区
可变地形
三维建模
三维激光扫描系统
Disaster-prone area
Changeable terrain
Three-dimensional modeling
Three-dimensional laser scanning system
