3 3D modeling building outline extraction system using ground lidar and its method

摘要

The present invention relates to a three-dimensional modeling building outline extraction system and method using a ground lidar, by scanning the entire exterior of a building using a ground lidar device and vectorizing the scanned point data into image data, An object of the present invention is to provide a system capable of extracting an outline and a method therefor. The present invention for achieving this object, as an apparatus located around a building to be measured, a local surveying unit for generating point data for the target building by surveying the target building; a reference point acquisition unit for acquiring reference point coordinates for a target building from drawing data produced through aerial photogrammetry; a reference point correction unit for correcting location information of the reference point coordinates by matching the point data for the target building generated through the local surveying unit and the reference point coordinates acquired through the reference point acquisition unit; a scanning unit generating scanning data for the target building by scanning the outline of the target building; a data processing unit that integrates scanning data for a target building to give location coordinates, and extracts cadastral boundaries from the scanning data to which location coordinates are assigned; and an outline extraction unit for extracting the outline of the target building by three-dimensional modeling based on the extracted cadastral boundary line; It is characterized in that it includes.