Robust Estimation of Landslide Displacement from Multi-temporal UAV Photogrammetry-Derived Point Clouds

Existing algorithms based on remote sensing for landslide displacement estimation, such as C2C, C2M, DOD, and M3C2, are sensitive to errors generated in data processing, and further improving their accuracy is difficult. To address this issue, given that redundant observations may occur in landslide...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of selected topics in applied earth observations and remote sensing 2024-03, p.1-16
Main Authors: He, Haiqing, Ming, Zaiyang, Zhang, Jianqiang, Wang, Leyang, Yang, Ronghao, Chen, Ting, Zhou, Fuyang
Format: Article
Language:English
Subjects:
Autonomous aerial vehicles
error propagation
Estimation
intra- and inter-estimates
Landslide displacement
Point cloud compression
robust estimation
Rough surfaces
Surface morphology
Surface roughness
Terrain factors
unmanned aerial vehicle
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Existing algorithms based on remote sensing for landslide displacement estimation, such as C2C, C2M, DOD, and M3C2, are sensitive to errors generated in data processing, and further improving their accuracy is difficult. To address this issue, given that redundant observations may occur in landslide monitoring, we proposed a robust estimation method of landslide displacement from multi-temporal unmanned aerial vehicle (UAV) photogrammetry-derived point clouds. The proposed method first establishes the relevant graph to manage the trajectory of error propagation for landslide displacement estimation for all possible paths. Two modules, namely, intra- and inter-estimates, are explored to reduce the impact of outliers and high surface roughness in point clouds derived by UAV photogrammetry. Individually, the intra-estimate operation is used to calculate landslide displacement between two temporal point clouds by robust estimation considering outlier constraint, and the inter-estimate operation is used to obtain the optimal calculation of landslide displacement by minimizing a given objective function using IGG robust estimation proposed by the Institute of Geodesy and Geophysics at the Chinese Academy of Sciences. Experimental results show that the proposed method is significantly superior to conventional methods such as C2C, C2M, and M3C2, with an accuracy improvement of at least 8%.
ISSN:1939-1404
DOI:10.1109/JSTARS.2024.3373505