利用正射影像立体像对的无人机测图系统  

UAV Mapping System Using Orthoimage Stereo Image Pairs

作　　者：田生辉 武瑞宏[1] 张卫龙 杨远超[1] 石硕 赵一方 TIAN Shenghui;WU Ruihong;ZHANG Weilong;YANG Yuanchao;SHI Shuo;ZHAO Yifang(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi’an 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043

出　　处：《地理空间信息》2024年第5期77-80,101,共5页Geospatial Information

基　　金：中铁第一勘察设计院集团有限公司2022年度软件开发资助项目(2022RJ25);2021年度科研重大专项资助项目(2021KY73ZD(ZDZX)-01);2022年度科研重大专项资助项目(2022KY56(ZDZX)-02)。

摘　　要：利用无人机影像通过传统立体像对模型测图时需要频繁切换像对,将无人机影像制作为实景三维模型测图时则需频繁平移、缩放和旋转模型,两种方式都存在效率低的问题。正射影像立体像对可将成百上千个立体像对的左右片各自无缝拼接起来,形成覆盖超大范围的立体像对。开发了基于正射影像立体像对的无人机测图系统,作业模式与传统立体像对相似,但避免了像对切换,提高了作业效率。在多个项目中开展了1∶2000测图实验,该系统平面精度约为0.2 m,高程精度为0.2~0.4 m。Using UAV image to map through traditional stereo image pair has to switch image pairs frequently,and mapping on the 3D real scene model made by the UAV images has to translate,scale and rotate the model frequently.Both mapping methods have low efficiency.Orthoimage stereo image pairs can seamlessly mosaic the left and right pieces of hundreds of stereo pairs to form a stereo image pair covering a large range.We developed a UAV mapping system based on orthoimage stereo image pairs.The operation mode was similar to the traditional stereo image pair,but avoided switching image pairs and improved the operation efficiency.We conducted 1∶2000 mapping experiments in some projects.The results show that the plane accuracy of this system is about 0.2 m,and the elevation accuracy is between 0.2 and 0.4 m.

关 键 词：正射影像立体像对 测图系统 无人机影像 无缝拼接 精度评估 

分 类 号：P231[天文地球—摄影测量与遥感]