| 投影相机建模系统的自标定方法 |
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| 引用本文： | 谈樨,杨旭波.投影相机建模系统的自标定方法[J].科技通报,2012(7):130-134. |
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| 作者姓名： | 谈樨 杨旭波 |
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| 作者单位： | 上海交通大学软件学院 |
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| 基金项目： | 国家863课题研究项目(编号:2006AA01Z307) |
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| 摘 要： | 自标定方法可以得到相机系统的内部参数和/或外部参数,而不对场景结构作假设或作很少假设。本文提出一种新的自标定方法,用于投影相机建模系统。一个关键点在于投影仪既可以作为主动光源使用,也可以当做一个虚拟相机使用。首先,使用结构光方法从不同角度投影并拍摄一组图像。然后,通过将空间约束关系转换为内参约束,完成对系统的自标定。最后,利用估计的参数进行3D建模。实验结果验证了本文方法的可行性。
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| 关 键 词： | 投影相机系统 自标定 3D建模 本质矩阵 |
A Self-calibration Method for Projector-Camera Modeling System |
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| TAN Xi,YANG Xubo.A Self-calibration Method for Projector-Camera Modeling System[J].Bulletin of Science and Technology,2012(7):130-134. |
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| Authors: | TAN Xi YANG Xubo |
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| Institution: | (School of Software,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | With no or few assumptions about the structure of scene,self-calibration methods try to find the intrinsic parameters and/or extrinsic parameters of the system.This paper proposes a new self-calibration method for a projector-camera based 3D modeling system.The key enabling observation is that a projector can be used as an active light source,and be conceptually regarded as a camera.Firstly,we capture a few image sequences under three different light position using structured-light method.Taking a simple constraint into account,we can then achieve a self-calibration of the system.Finally,we use the estimated parameters to build a 3D model.The experimental results show the effectiveness of this approach. |
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| Keywords: | projector-camera system self-calibration 3D modeling essential matrix |
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