치과보정물 적용을 위한 3차원 구조광 스캔 시스템 개발

Abstract

In this paper, a structured light based 3D scanning system for dental correction is proposed. The system consists largely of hardware scanner and scanning software. The scanner consists of light source, detector, rotary stage, and arm controller. The scanning program includes structured light control, geometry calibration, 3D point cloud acquisition, and 3D geometry modeling. The light source is white LED projector which can control 40 pattern light. The scan data can be control various direction by the rotary stage. A size of the target object is less than 10cm and measurement distance is about 20cm. The system is applied structured light scanning thecnique to acquire accurate 3D model. The structured light scanning provides accurate results even if the measurement range is short. The scan accuracy of the proposed system is under 0.01mm. A scanning speed of the system for full 3D model is under 1min and a scanning speed of a part of scan data is about 18 seconds. The scaner performance can be applied to dental area. To design artificial teeth or detal implant, 3D scan data of the dental correction is needed. The proposed scan system is optimized to the area