倾斜摄影测量数据轻量化处理技术研究

随着无人机技术的日益成熟，倾斜摄影测量数据可有效支撑实景三维展示、地理信息数据挖掘等，已广泛用于旅游实景地理信息数字化。本文主要针对大数据量倾斜摄影测量数据显示缓慢问题，探索数据轻量化处理技术并进行验证分析。以航飞获取的山西省平遥古城景区倾斜摄影测量数据为源数据，采用多种技术对源数据进行处理分析，并采用Cesium平台对优化前后数据源效率进行验证，经过优化的倾斜摄影测量数据可实现浏览效率大幅度提升，其中金字塔级别优化技术对倾斜摄影测量数据浏览速度提升最大，约占50%。

Research on lightweight processing technology for tilt photogrammetry data

With the maturity of UAV technology, tilt photogrammetric data can effectively support real-world 3D display, geographic information data mining, et al, which has been widely used in tourism real-world geographic information digitization. In this paper, aiming at the problem of slow display of large data volume tilt photogrammetry data, the data lightweight processing technology is explored and verified. Taking the oblique photogrammetric data of Pingyao ancient city scenic spot in Shanxi Province obtained by flight as the source data, the source data are processed and analyzed by various technologies, and the efficiency of the data source before and after optimization is verified by Cesium platform. The optimized oblique photogrammetric data can greatly improve the browsing efficiency, among which pyramid level optimization technology can browse the oblique photogrammetric data. The speed of browsing increased the most, accounting for about 50%.