一种投影-摄像机交互系统中的全自动快速标定方法  

Research on a rapid automatic calibration method for large projector-camera interaction system

作　　者：杨涛[1] 刘越[1] 吕尤[1] 王涌天[1] 

机构地区：[1]北京理工大学光电学院,北京100081

出　　处：《系统仿真学报》2009年第S1期51-53,共3页Journal of System Simulation

基　　金：国家高技术研究发展计划(863计划)(2009AA01Z337);国家自然科学基金仪器专项(60827003);教育部长江学者和创新团队发展计划项目(IRT0606)

摘　　要：针对目前应用于大尺度投影-摄像机交互系统中的手动标定方法标定点数量少、误差大、耗时长、操作专业程度高等不足,提出了一种准确快速的全自动标定方法。该方法采用机械可切换拍摄波长摄像机采集投影图像上划分的多区域顶点,在交互过程中通过计算投影图像与摄像机图像每个点的线性对应关系计算交互点在投影图像上的实际位置。所提出的方法采用的逐点计算方法自动消除了大尺度光学器件带来的不可修正系统误差,该方法不仅提高了交互系统的精确度、同时减少了系统安装的复杂度,增强了了交互系统的通用性。Manual calibration has been widely used in large projector-camera interaction system, which possesses such limitations as fewer calibration points, lower accuracy, requirement of professional operation and waste of time. An accurate and rapid automatic calibration method is presented in this paper, in which a mechanical structure is used to switch the wavelength of a camera from which the vertexes of cells in the projected image are recognized. The points’ correspondences are calculated between the projected image and the captured image, by which the real position in the projected image of the touch point is worked out in interactive processing. The complex warp caused by optical distortion can be eliminated with the point by point way. The proposed method can improve the accuracy of the projector-camera interaction system, reduce the complexity of system installation and promote the robustness of the interaction system.

关 键 词：人机交互 自动标定 虚拟现实 畸变校正 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]