Laser scanning develops a very dense point cloud of an upland project area which can be used to create detailed, high-resolution 3-D digital models. The abundance of data collected by this technology and the ability to integrate the results with other survey information makes laser scanning a cost effective tool for a variety of applications.
DEA’s Marine Services Division uses a vessel based laser scanner with a measurement rate of approximately 8,000 points per second interfaced with the vessel position and motion reference system.
A digital SLR camera with a fixed, calibrated lens aligned to the scanner with a precision mount allows georeferenced imagery to be collected concurrently with the scan data. Multibeam bathymetry can also be obtained alongside the scan data, allowing DEA to collect a very dense dataset from the seafloor to the top of bank in one pass. Combining mobile laser scanning with multibeam hydrography enables the generation of a fully integrated, hydrographic and topographic digital terrain model.
DEA’s Surveying and Geomatics Division utilizes several static topographic scanners as well as mobile terrestrial systems for high definition 3D laser scanning, asset management and infrastructure mapping.