Dense point cloud acquisition with a low-cost Velodyne VLP-16

Bula, Jason; Derron, Marc-Henri; Mariethoz, Gregoire

This study develops a low-cost terrestrial lidar system (TLS) for dense point cloud acquisition. Our system consists of a VLP-16 lidar scanner produced by Velodyne, which we have placed on a motorized rotating platform. This allows us to continuously change the direction and densify the scan. Axis correction is performed in post-processing to obtain accurate scans. The system has been compared indoors with a high-cost system, showing an average absolute difference of inline-formula±2.5inline-formulacm. Stability tests demonstrated an average distance of inline-formula±2inline-formulacm between repeated scans with our system. The system has been tested in abandoned mines with promising results. It has a very low price (approximately USD 4000) and opens the door to measuring risky sectors where instrument loss is high but information valuable.

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Bula, Jason / Derron, Marc-Henri / Mariethoz, Gregoire: Dense point cloud acquisition with a low-cost Velodyne VLP-16. 2020. Copernicus Publications.

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