Spot 5 Hrs Study - Automatic Dtm Extraction Regions 1 ( Montmirail - France ) and 7 ( Rasht - Iran )
نویسندگان
چکیده
With improved spatial resolution of available satellite images and the ability to collect the stereo images within a short time period, the importance of satellite images for generating elevation information has grown. Most of the users try to use satellite images because of the reasonable time and cost for ordering. The speed of information generation by satellite sensors from planning to execution is much higher than the conventional ways such as aerial photography process. Therefore, high-speed and high-accuracy software tools are required for information extraction from satellite images. Automatic DTM extraction from the satellite images is yet the challenging task. Different algorithms and software tools have been developed. In this study, the performance of two commercial remote sensing software tools, OrthoEngine of PCI Geomatica V8.2.3 and the OrthobasePro of ERDAS Imagine V8.6 and V8.7, have been evaluated for automatic DTM extraction from the SPOT 5 stereo pan imagery. The capability of SPOT 5 stereo pan images for DTM generation is analyzed, and the performances of the software tools for the orbit modelling and automatic image matching are discussed.
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