Automated 3D surface scanning based on CAD model

This paper presents a method to automate the process of surface scanning using optical range sensors and based on a priori known information from a CAD model. A volumetric model implemented through a 3D voxel map is generated from the object CAD model and used to define a sensing plan composed of a set of viewpoints and the respective scanning trajectories. Surface coverage with high data quality and scanning costs are the main aspects in sensing plan definition. A surface following scheme is used to define collision free and efficient scanning path trajectories. Results of experimental tests performed on a typical industrial scanning system with 5 dof are shown.

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