Streamlining the alignment of UAV and TLS forest point clouds: an approach based on ground and tree stems

Accurate co-registration of terrestrial and aerial point clouds may provide a high-resolution description of tree components for large forest areas. However, an automated approach for co-registering point clouds is still needed, given the challenges in geospatial data processing, particularly in complex topographical conditions. The main objective of this study is to present the application of a novel procedure for the co-registration of point clouds obtained from terrestrial and UAV surveys in Mediter-ranean forests.