Production of Dsm/dtm in Urban Areas: Role and Influence of 3d Vectors
نویسنده
چکیده
Thanks to the evolution of new sensors and the development of efficient algorithms, the automatic production of DSM (Digital Surface Models) and DTM (Digital Terrain Models) in urban areas has become possible. At SIRADEL, we have been interested in a new approach using external 3D vectors and a pair of aerial stereo images. In this paper, our method for computing DSM and DTM is briefly presented. Then this approach is compared to the traditional manual process in term of production cost and accuracy. In particular, the role and the influence of 3D vector data is quantitatively assessed and analysed.
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