刘亚平1 鲁言波1 李彤1 陈权彬2

　　(1.广东省生态环境监测中心，广东广州 510308;

　　2.北京世纪国源科技股份有限公司，北京100044)

　　摘 要：实景三维技术的发展为生态环境监测提供更加快捷、有效的技术手段。对水质自动监测站地理空间环境进行三维影像采集，在影像数据批量提取及三角测量解析、几何校正及平差处理后，获取水站及周边厘米级的垂直和倾斜三维影像。以莲花山水质自动监测站倾斜实景三维建模为例，逐步建立水站实景三维模型，构建三维影像数据库并实现业务化应用，其中数据采集过程航线的旁向重叠度一般需要达到65%，航向重叠度一般需要达到75%。处理后的矢量照片进行自动密集匹配处理，生成包含矢量信息的白模，最后构建TIN模型映射3D纹理。功能除了强大的可视化功能，如放大、缩小、旋转、多角度展示外，还具有空间测量、数据融合和分析研判功能，提高水站的可视化应用水平。

　　关键词：无人机;实景三维;GIS;可视化;水质自动监测站

　　3D scene modeling and application of automatic water quality monitoring station by drones

　　LIU Yaping1， LU Yanbo1， LI Tong1， CHEN Quanbin2

　　(1.Ecological Environment Monitoring Center of Guangdong Province, Guangzhou 510308，China;

　　2.Beijing Century GrandTech Corp.,Ltd.，Beijing 100044，China)

　　Abstract: The development of 3D scene technology provides an efficient and effective tool for ecological environment monitoring. In this paper, 3D images of geospatial environment of automatic water quality monitoring station are collected, and vertical and oblique 3D images of water station and its surroundings are obtained, after batch extraction of image data and triangulation analysis, geometric correction and adjustment processing. Taking Lianhuashan automatic water quality monitoring station as an example, 3D scene model of the station is developed step by step, which leads to the 3D image database in business application. During data collection, the sideway overlap degree of air route generally needs to reach 65%, and the course overlap degree generally needs to reach 75%. The processed vector photos are automatically dense matched intensively to generate “white models” containing vector information. Finally, the TIN model is developed to map 3D features. In addition to powerful visualization functions, such as zoom in/out, rotation and multi-angle display, it also has functions including spatial measurement, data fusion, analysis and judgment, which improve the visualization application level of water station.

　　Key words: drone; 3D scene;GIS;visualization; automatic water quality monitoring station