| 相移量校准提高正交复合光三维测量的精度 |
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| 引用本文： | 何宇航.相移量校准提高正交复合光三维测量的精度[J].光电子．激光,2011(3):404-408. |
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| 作者姓名： | 何宇航 |
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| 作者单位： | 四川大学光电科学技术系； |
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| 基金项目： | 国家“863”计划资助项目(2007AA01Z333);;国家重大专项资助项目(2009ZX02204-008);;四川省科技攻关资助项目(2006Z01-028) |
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| 摘 要： | 由于滤波过程的影响,从复合半纹像中解调出的各帧变形条纹间的相移量发生了改变,采用传统正交复合i维测量方法中的相位算法进行解相会导致较大的相位误差,提出一种对条纹间相移量进行校准以提高正交复合光三维测量精确度的标定方法.首先从参考平面的复合光栅像中解调获得各帧相移正弦条纹,通过频域滤波的方法获取条纹的基频分量,计算出各帧...
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| 关 键 词： | 提高精度 复合结构光 三维测量 正弦条纹 滤波 位相算法 |
Shifted-phase calibration for improving the accuracy of orthogonal composite light 3-D measurement |
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| HE Yu-hang.Shifted-phase calibration for improving the accuracy of orthogonal composite light 3-D measurement[J].Journal of Optoelectronics·laser,2011(3):404-408. |
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| Authors: | HE Yu-hang |
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| Affiliation: | Department of Optoelectronics,Sichuan University,Chengdu 610065,China |
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| Abstract: | A method for improving the accuracy of orthogonal composite light 3-D measurement is presented based on the shifted-phase calibration between fringes.Due to the effect of filtering in spatial frequency domain,the shifted phase between the deformed fringes demodulated from the composite gating image is changed,which leads to large phase error if the traditional phase algorithm is used.In this paper,the phase-shifting sine fringes demodulated from the composite grating image captured on the refere... |
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| Keywords: | accuracy improvement composite structured light 3-D measurement sine fringe filtering phase algorithm |
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