| Zernike矩提高哈特曼波前传感器的鲁棒性 |
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| 引用本文： | 李俊,陈海清,任温馨,杨振刚.Zernike矩提高哈特曼波前传感器的鲁棒性[J].中国激光,2006,33(8):033-1037. |
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| 作者姓名： | 李俊 陈海清 任温馨 杨振刚 |
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| 作者单位： | 华中科技大学光电子工程系,湖北,武汉,430074 |
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| 摘 要： | 哈特曼波前传感器是自适应光学(AO)系统中常用的波前传感器件,噪声、器件装配误差常常影响其探测波前的能力和精度,进而影响整个系统对波前的实时校正。通过实验证明,引入数字图像处理中的矩技术,无需在硬件上对自适应光学系统进行修改,利用Zernike矩噪声不敏感、旋转不变等特性,对波前传感器CCD数据进行预处理,能够降低系统对噪声的敏感性,减小对器件装配精度的要求。
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| 关 键 词： | 自适应光学 哈特曼波前传感器 Zernike矩 子孔径阵列板 图像重构 |
| 文章编号： | 0258-7025（2006）08-1033-05 |
| 收稿时间： | 2005-12-22 |
| 修稿时间： | 2006-02-22 |
Improvement of the Robustness of Hartmann Wavefront Sensor by Using Zernike Moment |
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| LI Jun,CHEN Hai-qing,REN Wen-xin,YANG Zhen-gang.Improvement of the Robustness of Hartmann Wavefront Sensor by Using Zernike Moment[J].Chinese Journal of Lasers,2006,33(8):033-1037. |
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| Authors: | LI Jun CHEN Hai-qing REN Wen-xin YANG Zhen-gang |
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| Affiliation: | Department of Opto-Electronics Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China |
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| Abstract: | The Hartmann wavefront sensor is commonly used in adaptive optical(AO) system to measure the wavefront aberration.Noise and assembly errors decrease the accuracy of a Hartmann wavefront sensor,thus degrade the quality of the AO system.The moment theory,which has its origin in digital graphic discipline,is introduced into AO system.The Zernike moment is utilized as pre-processing filter because it is insensitive to noise and rotationally invariant.Hence the AO system becomes less sensitive to noise,and no high assembly precision is required. |
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| Keywords: | adaptive optics Hartmann wavefront sensor Zernike moment sub-aperture array plate image reconstruction |
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