대한원격탐사학회:학술대회논문집 (Proceedings of the KSRS Conference)
- 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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- Pages.103-106
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- 2004
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- 1226-9743(pISSN)
Refinement of DEM boundaries using Point Distribution Criteria in Scattered Data Interpolation
- KIM Seung-Bum (Satellite Technology Research Center, Korea Advanced Institute of Science and Technology)
- 발행 : 2004.10.01
초록
Extrapolation off the boundaries of scattered data is an intrinsic feature of interpolation. However, extrapolation causes serious problems in stereo-vision and mapping, which has not been investigated carefully. In this paper, we present novel schemes to eliminate the extrapolation effects for the generation of a digital elevation model (DEM). As a first step, we devise point distribution criteria, namely COG (Center of Gravity) and ECI (Empty Center Index), and apply rigorous and robust elimination based on the criteria. Compared with other methods, the proposed schemes are computationally fast and applicable to a wide range of interpolation techniques.