YANG Qin-ke, David Jupp, GUO Wei-ling, et al. Genaralizing the Fine Resolution DEMs with Filtering Method[J]. Bulletin of Soiland Water Conservation, 2008, 27(6): 58-62.
YANG Qin-ke, David Jupp, GUO Wei-ling, et al. Genaralizing the Fine Resolution DEMs with Filtering Method[J]. Bulletin of Soiland Water Conservation, 2008, 27(6): 58-62.DOI:
Oriented to examine the impacts of scales of topographic parameters in regional soil erosion assessment
filtering method was applied to generalize fine resolution DEM(cellsize = 5 m) in ERDAS and ArcGIS systems.The effects of generalization have been assessed by comparing the general topographic characters
statistical analyzing of derived slopes and curvatures
as well as resultant contours and streams.The results show that fine resolution DEMs can be generalized
and the generalized DEMs
with a scaling factor of 5 or 10
and a 3*3 filtering window
are comparable to 10 m resolution DEMs and 1∶50 000 topographic maps in representing ground reliefs.