We describe a 3D shape acquisition system composed of a camera and a line laser pointer. A low-cost laser 3D scanner is proposed having a simple tool to solve the positioning problem for the triangulation based 3D reconstruction. In contrast to the previous works that require a special platform or background geometry, the proposed system has advantages of portability and easy maintenance. Moreover, since auto-calibration method is presented, the proposed system is more convenient than the previous works and has advantage in maintaining accuracy.
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