Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Civil Engineering Dimension
Muhammad Zarith Sufi Shem Azman
Universiti Teknologi MARA Pulau Pinang, Permatang Pauh Campus
Civil Engineering, Building, Construction & Architecture

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Enhancement of Point Cloud Data for Rock Slope Stability Analysis Aniza Albar; Mohd Mustaqim Mohd Nordin; Muhammad Zarith Sufi Shem Azman
Civil Engineering Dimension Vol. 28 No. 2 (2026): SEPTEMBER 2026
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.28.2.219-229

Abstract

Unmanned aerial vehicle (UAV) photogrammetry offers a safe and efficient alternative to manual rock mass characterization in hazardous terrain. This study evaluates quality control measures, compares the discontinuity of accuracy data with and without Ground Control Points (GCPs), and performs kinematic a stability analysis of a sedimentary rock slope. Using a GPS-integrated drone and GNSS coordinates, a high-resolution 3D model was generated in Agisoft Metashape, and discontinuity orientations were extracted using CloudCompare. Results indicate that optimal UAV camera angles and an image overlap of 60%–80% are critical for achieving high model fidelity. Incorporating GCPs significantly improved accuracy; the mean percentage differences in dip direction decreased from 5.21%–22.01% (without GCPs) to 1.66%–10.06% (with GCPs). Comparative analysis with manual scanline surveys demonstrated strong agreement, successfully identifying stable conditions, as well as wedge and planar failures modes. These findings underscore the necessity of GCPs in UAV-based mapping for reliable kinematic rock slope assessment.
Co-Authors Aniza Albar Mohd Mustaqim Mohd Nordin