As-built 3D modeling of large facilities based on interactive feature editing

Abstract

Phase-based and time-of-flight laser scanners can capture dense point-clouds of indoor and outdoor environment. However, such point-clouds usually lack the backsides of objects and the portions occluded by other ones. In this paper, we propose a new modeling methodology which converts a point-cloud to a Mercator image and a mesh model, and enables reconstructing the missing portions interactively by using image-based techniques. The grid mesh format is proposed for quick access to largescale mesh models. A prototype system is implemented to show the efficiency of our method. © 2010 CAD Solutions, LLC.