Three Dimensional Building Modeling Assessment of Drone Survey Sensors for Disaster Cause Investigation

Key Points

• The study aims to assess the impact of drone survey sensors on the quality of 3D models used for disaster cause investigation.
• Selected a site with varied building shapes and artificial stairs for assessment.
• Utilized DJI Matrice 350 RTK equipped with LiDAR and optical cameras for data collection.
• Varying conditions included overlap, flight altitude, speed, and shooting method.
• The optical camera (P1) provided high visibility in modeling building exteriors and stair shapes.
• LiDAR sensor (L2) showed the least shape distortion under specific conditions: 40% overlap, 50m altitude, and 6m/s speed.
• LiDAR sensor (L1) secured high point density and stability but experienced data loss in vertical planes and edges.

Abstract