劉亞平1 魯言波1 李彤1 陳權彬2

　　(1.廣東省生態環境監測中心，廣東廣州 510308;

　　2.北京世紀國源科技股份有限公司，北京100044)

　　摘 要：實景三維技術的發展為生態環境監測提供更加快捷、有效的技術手段。對水質自動監測站地理空間環境進行三維影像采集，在影像數據批量提取及三角測量解析、幾何校正及平差處理后，獲取水站及周邊厘米級的垂直和傾斜三維影像。以蓮花山水質自動監測站傾斜實景三維建模為例，逐步建立水站實景三維模型，構建三維影像數據庫并實現業務化應用，其中數據采集過程航線的旁向重疊度一般需要達到65%，航向重疊度一般需要達到75%。處理后的矢量照片進行自動密集匹配處理，生成包含矢量信息的白模，最后構建TIN模型映射3D紋理。功能除了強大的可視化功能，如放大、縮小、旋轉、多角度展示外，還具有空間測量、數據融合和分析研判功能，提高水站的可視化應用水平。

　　關鍵詞：無人機;實景三維;GIS;可視化;水質自動監測站

　　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