INDOOR 3D MODEL EXTRACTION METHOD BASED ON POINT CLOUDS FROM TERRESTRIAL LIDAR AND RECORDING MEDIUM THEREOF

摘要

The present invention relates to a point cloud-based indoor space three-dimensional model extraction method acquired in a terrestrial environment, wherein the indoor space is scanned using the terrestrial environment; A step 120 of merging the point clouds scanned in various places of the indoor space to generate a point cloud for one indoor space; 130) of segmenting the point cloud of the merged indoor space; 140. The method of claim 140, further comprising: determining a plane using the divided point cloud; A step 150 of extracting a boundary line for the indoor space using the determined surface; And a step 160 of generating a three-dimensional model of the indoor space by using the remaining point clouds for the boundary and the remaining area where the boundary is not extracted. Dimensional model extraction method of the indoor space. According to the present invention, a plane constituting an indoor space is automatically extracted from a three-dimensional point cloud acquired through laser scanning technology, and a three-dimensional model is extracted using a three-dimensional point cloud for the remaining indoor space Thus, the time and cost can be drastically reduced as compared with the conventional method. In addition, by expressing the three-dimensional indoor space using the automatically extracted plane and the unused three-dimensional point cloud for plane extraction, the detailed representation can be achieved without loss of information compared with the relatively small data size as compared with the existing method . In addition, if a technique of generating a three-dimensional indoor space model automatically or semiautomatically with a point cloud obtained by using the ground lidar is applied, it can be efficiently used for planning, designing and maintenance of an existing indoor space But it has an effect of contributing to the construction of an indoor space database in the field of urban planning, three-dimensional geographic information system (GIS) and building information modeling (BIS).