Primitives Merging For Rapid 3D Modeling

Abstract

ABSTRACT:Developing three dimensional models of infrastructure and construction in progress can be useful for designing modifications, for tracking work completed, and for facilitating advanced equipment control and safety functions. An emerging 3D modeling method involves scanning scenes with laser ranging devices. The resulting dense or sparse point clouds are converted to primitive geometric objects. Merging those objects is useful for visualization and advanced manipulation. Factors that influence this merging process are identified here. Heuristics are proposed for automated merging, and initial results presented.

Framework for Real-Time Three-Dimensional Modeling of Infrastructure

“…This enables rapid modeling of the static elements of work spaces; however, moving objects can not be captured without distracting the operator. Thus, detection and avoidance of moving obstacles still requires full operator attention (11).…”

“…Table 1 summarizes the characteristics of the sparse point cloud, dense point cloud, and Flash LADAR approaches (7,11,12). Ideal values for the target applications in transportation and construction also are indicated in the table, described as follows.…”