Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)
- 2003.11a
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- Pages.57-59
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- 2003
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- 1226-9743(pISSN)
DSM GENERATION FROM IKONOS STEREO IMAGERY
- Rau, Jiann-Yeou (Associate Research Engineer) ;
- Chen, Liang-Chien (Center for Space and Remote Sensing Research, National Central University) ;
- Chang, Chih-Li (National Space Program Office)
- Published : 2003.11.03
Abstract
Digital surface model generation from IKONOS stereo imagery is a new challenge in photogrammetric community, especially when the satellite company does not provide the raw data as well as their ancillary ephemeris data. In this paper we utilized an estimated relief displacement azimuth and the nominal collection elevation data included in the metadata file to correct the relief displacement of GCPs, together with a linear transformation for geometric modeling of IKONOS imagery. Space intersection is performed by the trigonometric intersection assuming a parallel projection of IKONOS imagery due to its small FOV and frame size. In the experiment, less than 2-meters of RMSE in orbit modeling is achieved denoting the potential positioning accuracy of the IKONOS stereo imagery.