ASPECTS OF THE DSM PRODUCTION WITH HIGH RESOLUTION IMAGES

This paper deals with the production of digital surface models (DSM) from high resolution images. The paper explains why the quality of the dense DSM depends on the quality of input data and data compilation. The INPHO GmbH software MATCH-T DSM has been redesigned to produce very dense DSM data. The most important improvement was the introduction of sequential multiimage matching. The point extraction is no longer based on static models, but on computation units. Each computation unit in MATCH-T DSM chooses the best suited image pairs. Each image pair delivers a point cloud, the combined point clouds are filtered by a robust analysis. The precision and the completeness of the MATCH-T DSM from high resolution images is analyzed in two case studies.