Some researchers have presented methods for the automatic extraction, but the cross-sections “produced” are restricted to be planar. Although there are specialized computer programs available for this process, the entire work must be mainly done manually. The accuracy achieved, though, depends on the quality and the resolution of the DEM available. An alternative way to get these river cross-sections is to extract them from Digital Elevation Models (DEM). These cross-sections should be perpendicular to the flow path and are usually obtained through an in-field survey that is both a costly and time-consuming procedure. Flood simulation and hydrodynamic modeling of river flow require a dense sequence of river cross-sections.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |