基于格雷码和线移编码的结构光系统标定  

Structured light system calibration based on Gray code combined with line-shift

作　　者：陆军[1] 宋成业 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《光电子．激光》2012年第6期1146-1151,共6页Journal of Optoelectronics·Laser

基　　金：黑龙江自然科学基金(F201123);人力资源和社会保障部留学人员科技活动择优基金资助项目

摘　　要：结构光系统标定是影响三维物体表面形状测量的关键因素,其中投影仪标定是难点问题。把投影仪当做逆向光路摄像机,采用格雷码和线移的编码方法捕获黑白棋盘标定板,得到其在"投影仪成像平面"上的像素坐标,继而采用传统的摄像机标定方法对投影仪进行标定。采用常规的双目视觉标定技术,最终完成结构光系统的标定。实验结果表明,本文方法实现简单易行,有较高的鲁棒性和标定精度。Structured light system calibration is the key factor that influences three-dimensional（3-D） shape measurement.And a difficult problem is the projector calibration.In this paper,the projector was taken as a reverse light camera to capture the checkerboard calibration plate by using Gray code combined with line-shift.Then,its pixel coordinates on projector image plane were obtained.The projector calibration was realized employing the traditional method of camera calibration.By using the conventional calibration technique of binocular vision measurement system,the calibration of structured light system was fulfilled.Experiment results demonstrate that the presented method is simple and feasible,and more important,it has better robustness and accuracy.

关 键 词：结构光测量 系统标定 格雷码 3D形状测量 

分 类 号：TN206[电子电信—物理电子学]