激光与光电子学进展, 2016, 53 (1): 011102, 网络出版: 2015-12-29   

一种基于结构光的牙齿三维测量系统 下载: 1717次

A Three-Dimensional Teeth Measurement System Based on Structured Light
作者单位
北京航空航天大学仪器科学与光电工程学院, 北京 100191
摘要
提出了一种基于结构光的牙齿三维轮廓测量系统。该系统由电荷耦合器件(CCD)相机和数字光处理(DLP)4500 投影模块组成。采用格雷码与相移法结合的投影方法。基于张正友标定法提出一种快速、精确的相机与投影仪联合标定的方法。在系统标定的基础上进行牙模扫描实验,得到了牙模三维点云轮廓。实验结果表明,该系统能够对牙模进行精确的三维测量,为其以后在牙科领域的应用奠定基础。
Abstract
A three-dimensional tooth profile measurement system based on projected structured light is presented. The system consists of a CCD (charge coupled device) camera and a DLP (digital light processing) 4500 projection module, combining Gray code and phase shifting fringe projection. A fast and accurate calibration method of camera and projector based on the calibration method proposed by Zhang Zhengyou is presented. Based on the system calibration, dental mold scanning experiments are performed to obtain a three-dimensional point cloud contour of dental wax. The experimental result shows that the system is capable of measuring the three-dimensional dental mold accurately, which provides a basis for the further application in the dental field.

欧攀, 王婷, 李瑞祥. 一种基于结构光的牙齿三维测量系统[J]. 激光与光电子学进展, 2016, 53(1): 011102. Ou Pan, Wang Ting, Li Ruixiang. A Three-Dimensional Teeth Measurement System Based on Structured Light[J]. Laser & Optoelectronics Progress, 2016, 53(1): 011102.

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