AUTOMATION OF WINDOWS DETECTION FROM GEOMETRIC AND RADIOMETRIC INFORMATION OF POINT CLOUDS IN A SCAN-TO-BIM PROCESS

Abstract. The detection of openings based on point clouds is generally geometric features namely the X, Y and Z coordinates points. Existing methods exploit but ignore most time other attributes as colour intensity. Such information may be however particularly interesting to recognise segment in facades. In this paper, use radiometric information, intensity, investigated for segmentation windows from façade clouds. assumption made that are significantly different terms materials colours distinguished facade walls. exploitation intensity considered separately. A histogram analysis method proposed whereas a region growing colorimetric distances colours. order refine results, more precisely depth points with regards walls, combined information. Several combinations provide promising results