May 27, 2021
Mapping shallow, nearshore areas can be a challenging job. The waters along coasts and islands are important to human activities, but when it comes to mapping these areas there is still a lot of work to do. Here, we have selected five articles that provide us with inspiration, insights and food for thought for shallow-water and coastal mapping.
Bathymetry from UAV Imagery and Machine Learning
Accurate bathymetric mapping of shallow areas is essential for a plethora of offshore activities. Through Structure from Motion (SfM) and Multiview Stereo (MVS) techniques, images can provide a low-cost alternative compared to Lidar and sonar systems while also offering important visual information. This article presents a new framework for mapping the seabed in clear and calm shallow waters for small- and large-scale surveys using aerial imagery and machine learning to correct the geometric effects of refraction on the 3D point clouds and the imagery. Read the full story here