Essential parameter calibration for the 3D scanner with only single camera and projector  

作　　者：宋丽梅 陈昌曼 陈卓 习江涛 禹延光 

机构地区：[1]Tianjin Key Laboratory of Advanced Technology of Electrical Engineering and Energy, Tianjin Polytechnic Univer-sity [2]School of Electrical, Computer and Telecommunications Engineering, University of Wollongong

出　　处：《Optoelectronics Letters》2013年第2期143-147,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.60808020 and No. 61078041);the Tianjin Research Program of Application Foundation and Advanced Technology (No.10JCYBJC07200)

摘　　要：A calibration method for the five essential parameters is proposed. Using the calibration results, the three dimensional (3D) reconstruction can be performed directly. The five essential parameters include the distance between the camera and the projector, the distance between the reference plane and the camera, the fundamental frequency of the fringe pattern, the scale factor from the image coordinates to the world coordinate system in X axis direction and that in Y axis direction. The proposed calibration method is implemented and tested in our 3D reconstruction system. The mean calibration error is found to be 0.0215 mm over a volume of 400 mm (H)×300 mm (V)×500 mm (D). The proposed calibration method is accurate and useful for the 3D reconstruction system.A calibration method for the five essential parameters is proposed. Using the calibration results, the three dimensional （3D） reconstruction can be performed directly. The five essential parameters include the distance between the camera and the projector, the distance between the reference plane and the camera, the fundamental frequency of the fringe pattern, the scale factor from the image coordinates to the world coordinate system in X axis direction and that in Y axis direction. The proposed calibration method is implemented and tested in our 3D reconstruction system. The mean calibration error is found to be 0.0215 mm over a volume of 400 mm （H）x300 mm （I1）~500 mm （D）. The proposed calibration method is accurate and useful for the 3D reconstruction system.

关 键 词：校准方法 摄像头 3D 扫描仪 投影仪 三维重建 世界坐标系 参考平面 

分 类 号：TP334.22[自动化与计算机技术—计算机系统结构] TP391.41[自动化与计算机技术—计算机科学与技术]