Some critical issues on airborne LIDAR mapping software in coastal survey

Airborne LIDAR is one of the most effective and reliable means of coastal survey. Using LIDAR data for coastal survey is becoming a standard practice in spatial related areas. However, the effective processing of the raw LIDAR data, the generation of an efficient and high-quality DEM and feature extraction remain big challenges. This paper reviews some critical issues on the LIDAR data pre-processing, removing and separating the LIDAR data, mainly including the following: How to extract and classify the buildings, vegetation, roads and the other objections and afterward having some discussions on the image registration and multi-source data fusion.