Overview of current LiDAR filtering algorithms and filters test for urban flood application

Abstract

Urban flooding is serious problem around the world and more severe in South East Asia because of heavier rainfall, increase of impervious area and lower standard of drainage system. The use of accurate hydrological and hydraulics model to simulate urban flooding is essential in order to understand the phenomena and help decision makers to identify suitable solution in order to reduce it. Digital elevation model (DEM) is one of the important input parameter in urban flood application because it will affect flow direction, flow velocity, flood extend and flood depth. LiDAR offer accurate DEM for large area within short time.