摘要
In this paper, the performance of median filter, elevation dependent adaptive sigma median filter, and directionally dependent adaptive sigma median filter are tested on both InSAR Tandem DEM and simulated high-level noisy DEM. Through the comparison, the directionally dependent adaptive sigma median filter is proved to be the most effective one not only in the noise removing but also in the boundary preserve.
In this paper, the performance of median filter, elevation dependent adaptive sigma median filter, and directionally dependent adaptive sigma median filter are tested on both InSAR Tandem DEM and simulated high-level noisy DEM. Through the comparison, the directionally dependent adaptive sigma median filter is proved to be the most effective one not only in the noise removing but also in the boundary preserve.
基金
Project supported by the Specialized Research Fund for the Doctoral Programof Higher Education(No.20030486038)
Programfor New Century Ex-cellent Talents in University(NCET-04-0681)
the Key Laboratory of Geography Spatial Information ,State Bureau of Surveying and Mapping ( No.1460130424210)
the Hubei Provincial Excellent Young Sciencisit Foundation (No.2002AC011) .
