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

• 作者: Jiong JIANG Pengfei WEN Xian JI Zhenjia HE Zhou WEI
• 来源期刊: 亚洲农业研究：英文版
• 学科: 农学
• 年，卷（期）: 2016,（10）
• 页码范围: 55-58
• 页数: 4页
• 分类号: S159

摘要

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.