KEYWORDS: 3D modeling, 3D image processing, Data modeling, Photogrammetry, Digital photography, 3D image reconstruction, Cameras, Calibration, 3D acquisition, Digital imaging
In this paper, we create the geospatial data of three-dimensional (3D) modeling by the combination of digital
photogrammetry and digital close-range photogrammetry. For large-scale geographical background, we make the
establishment of DEM and DOM combination of three-dimensional landscape model based on the digital
photogrammetry which uses aerial image data to make "4D" (DOM: Digital Orthophoto 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 three-dimensional
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 three-dimensional 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 threedimensional
landscape and the metric building.
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