| 结构光三维测量系统中投影仪标定技术研究 |
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| 引用本文： | 韦争亮,钟约先,袁朝龙.结构光三维测量系统中投影仪标定技术研究[J].光学技术,2009,35(2). |
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| 作者姓名： | 韦争亮 钟约先 袁朝龙 |
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| 作者单位： | 清华大学机械工程系先进成形制造教育部重点实验室,北京,100084 |
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| 摘 要： | 投影仪标定是单摄像机单投影仪结构光三维测量中的基础。采用双面标定块实现投影仪的标定。标定块正面为黑底白色圆点图案,通过Tsai两步法及非线性优化完成摄像机标定。背面为反射率均匀的白色平面,由投影仪投影双方向高亮度的直线来生成特征点。针对特征点三维坐标难以确定的问题,采用了两种方法:一是依靠摄像机标定结果;二是结合正面圆点图案,利用交比不变性获取更多的有效输入数据。标定设备简单,操作方便。实验结果证明具有较理想的标定精度。
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| 关 键 词： | 三维测量 结构光 标定 交比不变性 |
Research on the calibration technique of projector in structured light 3D measurement system |
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| WEI Zheng-liang,ZHONG Yue-xian,YUAN Chao-long.Research on the calibration technique of projector in structured light 3D measurement system[J].Optical Technique,2009,35(2). |
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| Authors: | WEI Zheng-liang ZHONG Yue-xian YUAN Chao-long |
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| Institution: | Department of Mechanical Engineering;Tsinghua University;Beijing 100084;China |
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| Abstract: | Projector calibration is one of the most basic in structured light 3D measurement consisted of one camera and one projector.The projector calibration technique is based on double-face calibration block.The up surface of the block with pattern of white circular points on black background is used to complete camera calibration by Tsai two-step method and non-linear optimization.The down surface of the block is white in uniform reflection condition,the projector projects two-dimensional line with high intensit... |
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| Keywords: | 3D measurement structured light calibration cross-ratio invariability |
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