Effect of Point Cloud Data Simplification and Encryption on Micro-Topography Data Analysis

Simplification and encryption are performed on the point cloud data concerning high-relief (20 cm tillage) and low-relief (raking bare slope) terrain on a different scale of observation. We select three indicators (surface curvature, slope aspect and surface roughness) to evaluate the effect of simplification and encryption on micro-topography data analysis. The results show that simplification and encryption have a significant impact on the curvature of high-relief terrain, but have no significant impact on low-relief terrain. The slope aspect change is not significant after 5, 10 mm data simplification and encryption; 1 mm simplification has a regular impact on surface roughness; 5 mm encryption and simplification have a complex impact on high-relief terrain; 10 mm encryption has a complex impact on high-relief terrain roughness change but a regular impact on bare slope change.


Subject(s):
Issue Date:
2016-10
Publication Type:
Journal Article
PURL Identifier:
http://purl.umn.edu/251875
Published in:
Asian Agricultural Research, Volume 08, Issue 10
Page range:
55-58
Total Pages:
4




 Record created 2017-04-01, last modified 2017-08-29

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