以卫星立体影像数据和倾斜摄影数据为数据源,以资源三号卫星获取的湖南省遥感影像为例,基于瓦片金字塔模型,实现了不同分辨率的多类型数据的融合,建立了地形与纹理一体化表达的真三维模型。自主研发了ItelliEarth软件,以实现基于海量地形数据的三维场景下数据模型的可视化。研究结果表明,所提方法建立的真三维模型符合相关规范要求,为实现大尺度空间真三维模型的构建提供了有效途径。

The satellite stereoscopic images and the oblique photograph data are used as the data sources. The remote sensing images of Hunan Province obtained from ZY-3 are taken as examples. Based on the tile-pyramid model, the fusion of multiple types of data with different resolutions is realized and a real three dimensional (3D) model with an integrated expression of terrain and texture is constructed. In order to achieve the visualization of data models based on the massive terrain data in 3D scenes, a software named ItelliEarth is developed independently. The research results show that the real 3D model constructed by the proposed method can meet the requirements of relevant specifications, which provides an effective way to realize a large-scale 3D real space model.