| 摄像机线性模型标定中一种投影矩阵的修正方法 |
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| 引用本文： | 霍龙,刘伟军. 摄像机线性模型标定中一种投影矩阵的修正方法[J]. 计算机工程与应用, 2005, 41(6): 75-77 |
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| 作者姓名： | 霍龙 刘伟军 |
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| 作者单位： | 沈阳工程学院,沈阳,110036;中国科学院沈阳自动化研究所先进制造技术研究室,沈阳,110016;中国科学院沈阳自动化研究所先进制造技术研究室,沈阳,110016 |
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| 摘 要： | 线性模型摄像机标定中,由于不考虑非线性畸变,使投影矩阵存在着标定误差,并影响三维重建的精度。在分析投影矩阵标定过程的基础上,提出了一种修正方法,它是将三维重建误差折算到投影矩阵中,通过解超定线性方程组求出参数的偏差值并构造新的投影矩阵。用修正后的矩阵进行三维重建,提高了重建的精度。
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| 关 键 词： | 摄像机标定 计算机视觉 投影矩阵修正 |
| 文章编号： | 1002-8331-(2005)06-0075-03 |
A Modification Approach for Projection Matrix in Camera Linear Model Calibration |
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| Huo Long,Liu Weijun. A Modification Approach for Projection Matrix in Camera Linear Model Calibration[J]. Computer Engineering and Applications, 2005, 41(6): 75-77 |
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| Authors: | Huo Long Liu Weijun |
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| Affiliation: | Huo Long 1,2 Liu Weijun 21 |
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| Abstract: | For not considering the non-linear deformation in linear model camera calibration,projection matrix(PM)con-tains calibration error that affects the precision of3D reconstruction.A PM correctness method is proposed based on the analysis of calibration process of PM.The error from3D reconstruction is converted to PM and the PM is reconstructed by the parameters deviation resolved from over-determined equations.This modified projection matrix is utilized in3D reconstruction.Results show that the precision is improved greatly. |
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| Keywords: | camera calibration computer vision modification of projection matrix |
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