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      不同作业模式下无人机摄影测量三维实景建模效率与质量评价

      Evaluation on efficiency and quality of 3D real scene models under different operation modes of unmanned aerial vehicle photogrammetry

      • 摘要: 为了兼顾测绘外业作业效率与成果质量,同时也为了给数字孪生工程赋能,提供可视化效果好、精度高且轻量的三维实景模型,以湖北省襄阳市汉江崔家营航电枢纽工程为研究对象,从数据采集、模型构建、模型精度等方面对3种不同作业模式下无人机摄影测量生产的三维实景模型的建模效率与模型质量进行了对比分析。结果表明:①无人机下视单目镜头摄影测量方式建模兼顾了作业效率与成果质量,符合传统测绘生产单位的生产需求,但是模型可视化效果较差;②云台旋转摄影测量方式建模模型可视化效果较好、数据存储量较低、精度高,符合数字孪生工程数据底板的需求;③倾斜摄影测量方式建模模型可视化效果较好、精度高,但是数据存储量大且内业处理时间长。经综合比较分析,云台旋转摄影测量为最优选择。

         

        Abstract: In order to balance the efficiency and quality of surveying and mapping field operations, as well as to empower digital twin projects, and provide 3D real scene models with good visualization effects, high accuracy, and lightweight. The Cuijiaying Navigation and Hydropower Hub Project in Hanjiang, Xiangyang City of Hubei Province was taken as an example, the study was conducted on the modeling efficiency and quality of 3D real scene models produced by unmanned aerial vehicle photogrammetry under three different operation modes through data collection, model construction, and model accuracy. The results showed that: ① The unmanned aerial vehicle down view monocular lens photogrammetry modeling method achieved both operational efficiency and result quality, and the model can meet the production needs of traditional surveying and mapping production units, but the visualization effect was poor. ② The modeling model of Pinion rotating photogrammetry had a good visualization effect, low data storage capacity, and high accuracy, which met the requirements of digital twin engineering data base plate. ③ The oblique photogrammetry modeling method had a good visualization effect and high accuracy, but it had a large data storage capacity and long processing time in the office. After comprehensive comparative analysis, the pinion rotating photogrammetry was the best option.

         

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