Application of Unmanned Aerial Vehicle Oblique Photogrammetry to Investigation of High Slope Rock Structure

Translated title of the contribution: Application of Unmanned Aerial Vehicle Oblique Photogrammetry to Investigation of High Slope Rock Structure

Zhen Ye, Qiang Xu*, Qian Liu, Xiujun Dong, Xiaochen Wang, Hao Ning

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Objectives: Traditional remote sensing methods are often limited by the complex terrain and the hardware equipment, which often leads to in-situ measurements that cannot comprehensively, accurately and quickly obtain the slope rock structure data sets. Unmanned aerial vehicle (UAV) oblique photogrammetry technology can obtain comprehensive information on rock structure. Methods: We describe a method for acquiring, visualizing, and extracting three-dimensional information of high slope rock structure based on the dense surface points. The oblique photogrammetric data acquired with UAV is considered and a multi-rotor drone with single-lens is used for aerial surveys to reconstruct the three-dimensional point cloud model of the high slope. The Hough normal algorithm and the HSV(hue, saturation, value) algorithm are used to build a visual three-dimensional rock mass structure model and the model is spherical k-means clustering to complete the automatic extraction of rock structure. Results: From the three-dimensional rock structure analysis, it is possible to quickly extract rock structure characteristics such as orientation, spacing and trace length by rendering the geometry of the three-dimensional slope face. Conclusions: Further research is being carried out in order to build blocky slope masses and identify the kinematic instability of the high limestone cliffs.

Translated title of the contributionApplication of Unmanned Aerial Vehicle Oblique Photogrammetry to Investigation of High Slope Rock Structure
Original languageChinese
Pages (from-to)1739 - 1746
Number of pages8
JournalGeomatics and Information Science of Wuhan University
Volume45
Issue number11
DOIs
Publication statusPublished - 18 Nov 2020

Keywords

  • 3D visualization model
  • High slope
  • HSV algorithm
  • Rock structure
  • Spherical k-means clustering
  • Unmanned aerial vehicle oblique photogrammetry

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Earth-Surface Processes

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