BUILDING RECONSTRUCTION USING LIDAR DATA

Within the GIS world, LIDAR becomes an important and convenient data so urce. Many researchers are developing algorithms to extract a bare-earth model and building boundaries from LIDAR data. This pap er presents two different methods for building reconstruction using LIDAR data. The first is a traditional method using filtered LIDAR data and combining cadastral building boundaries data (for example, Ordnance Survey Landline data). The second uses the Voro noi Diagram to trace building outlines. To extrude buildings, we use Computer Aided Design (CAD)-type Euler Operators to create a TIN m odel and then we use the operators to modify the TIN, e.g. extrude buildings, interactive editing or further spatial analysis.