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UAV based beach micro feature mapping

Authors: Lei Wang*, Louisiana State University, Jaehyung Yu, Chungnam National University
Topics: UAS / UAV, Coastal and Marine
Keywords: Beach features, UAV, point cloud
Session Type: Paper
Presentation File: No File Uploaded

This research investigated the use of UAV point clouds obtained at different heights to detect beach micro features. A profile-based method was applied to three types of ripple mark patterns: featureless, regular pattern, and irregular pattern. A terrestrial laser scanner (TLS) profile was used as the baseline for accuracy control. The RMSE between TLS profile and UAV-based profiles increased with UAV flight altitude. All UAV profiles matched the TLS profile with acceptable accuracies. Among them, the RMSE of the irregular ripple pattern is much smaller than the irregular terrain, because UAV can capture more extreme elevation points than in the former condition. This study proved that UAV-based elevation surveys could achieve high-level accuracy with controlled flight heights and could replace the costly TLS-based surveys. It is more effective for mapping regular geometric patterns than a featureless or noisy surface.

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