无人机倾斜摄影三维实景建模及其优化技术研究  

Research on 3D Reality Modeling and Optimization Technology of UAV Oblique Photography

作　　者：卜全民 赵小乔[3] 李涛 BU Quan-min;ZHAO Xiao-qiao;LI Tao

机构地区：[1]江苏警官学院治安系 [2]江苏警官学院江苏省应急处置工程研究中心 [3]江苏警官学院

出　　处：《江苏警官学院学报》2022年第3期122-128,共7页Journal of Jiangsu Police Institute

基　　金：公安部科技强警专项项目“三维影像警用地理信息系统实现技术研究”(2020GABJC34)。

摘　　要：随着智慧城市建设的快速发展,无人机倾斜摄影三维建模技术具有真实度高、精度高、成本低、适于大场景建模等优势,有着广泛的应用前景。然而无人机倾斜摄影测量技术中的控制点布设方面目前还没有形成规范或指导意见,在悬空物、遮挡物处理技术方面,传统方法存在精度、效率较低等问题。本文提出根据三维模型精度要求、测区地形和地物密度等因素选择控制点布设方案的方法,针对三维实景模型中的悬空物、遮挡物缺陷,分别提出基于TIN的降维分析处理方法和基于纹理色调、几何特征的遮挡物分类提取修复优化方法。提出的新方法可以大幅度提高作业效率和模型精度,对当前数字化、智慧化城市建设具有一定促进作用。With the rapid development of smart city construction,UAV oblique photography 3D modeling technology has the advantages of high fidelity,high precision,low cost,suitability for large scene modeling,etc.,and has a wide range of application prospects.However,there is no specification or guidance for the layout of control points in the UAV oblique photogrammetry technology,and in terms of the processing technology of suspended objects and occlusions in the oblique photography 3D reality model,the traditional methods have low accuracy and low efficiency.This paper proposes a method to select the control point layout plan according to the accuracy requirements of the 3D model,the topography of the survey area and the density of ground objects.And for the defects of suspended objects and occlusion in the 3D reality model,proposes a dimensionality reduction processing method based on TIN and an optimization method for classification,extraction and repair of occlusion based on texture tones and geometric features.The proposed new methods may greatly improve the operation efficiency and model accuracy,and play a certain role in promoting the current digital and smart city construction.

关 键 词：无人机倾斜摄影 三维实景模型 模型优化 

分 类 号：D912[政治法律—法学]