采用摄影测量与数字近景数字摄影测量相结合的方法,进行地理空间数据的三维建模.对于大范围地理背景,基于摄影测量方法,利用航空影像数据,以4D产品的生产方式,建立DEM与DOM结合的三维景观模型.对于该范围内用户感兴趣的建筑物等人工地物,基于数字近景摄影测量方法,利用非量测数码相机进行影像数据采集,通过相机检校、特征提取、影像匹配等步骤实现可量测真实景物的三维重建.最后将上述大范围的三维背景地理数据与局部可量测实景影像相结合,实现可量测实景影像与4D产品的集成.讨论了该方法的整体流程和技术,实现了实验区大范围三维景观和可量测建筑物的三维重建及其两者的集成.%In this paper, we create the geospatial data of three-dimensional (3D) modeling by the combination of photogrammetry and digital close-range photogrammetry. For large-scale geographical background, we make the establishment of DEM and DOM combination of 3D landscape model based on the photogrammetry which uses aerial image data to make "4D" (DOM; DigitalOrthophoto Map, DEM: Digital Elevation Model, DLG: Digital Line Graphic and DRG: Digital Raster Graphic) production. For the range of building and other artificial features which the users are interested in, we realize that the real features of the 3D reconstruction adopting the method of the digital close-range photogrammetry can come true on the basis of following steps; non-metric cameras for data collection, the camera calibration, feature extraction, image matching, and other steps. At last, we combine 3D background and local measurements real images of these large geographic data and realize the integration of measurable real image and the 4D production. The article discussed the way of the whole flow and technology, achieved the three-dimensional reconstruction and the integration of the large-scale three-dimensional landscape and the metric building.
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