光学系统中光瞳动态变化的测量

研究了光学系统实时精密自动对准中光束光瞳位置动态变化的测量问题。采用相位相关算法处理基准和实测图像得到光瞳平移量数据，其测量相对误差不超过0.4 pixel；针对实际运用中光瞳图像存在的灰度变化、噪声、旋转和缩放等诸影响因素，对算法进行了理论分析和全面的仿真测试。结果表明该算法能克服光强分布不均和强噪声的影响，得到高精度测量结果；对旋转和缩放进行校正后，测量精度在1 pixel左右。提出并测试了将多帧图像叠加后的图像之和作为基准图像的测量方法，使相位相关信噪比提高了88.6%，稳健性显著提高。

Abstract

The measurement of pupil-positoin change in real-time precise automatic alignment of optical system is investigated. The translation data of the pupil is obtained by processing reference of phase-correlation algorithm and experimentally measured image; the measurement relative error is less than 0.4 pixel. In accordance with the various influencing factors such as the grey level change, noise, rotation and scaling, theoretical analysis and simulation test of the algorithm is performed. The results show that algorithm can overcome effect of inhomo-geneous distrbution of light intensity and severe noise, so that high measurement result can be obtained. After correction of the rotation and scaling corrected, the measurement precision remains in 1 pixel. The measurement method that superposed multi-image sum is taken as the reference image is proposed, the phase correlation SNR is enhanced by 88.6%, robutness is obviously increased.

参考文献

[1] 周维, 胡东霞, 赵军普等. 高功率固体激光器光路自动准直算法与流程优化[J]. 中国激光, 2010, 37(1): 78～81

Zhou Wei, Hu Dongxia, Zhao Junpu et al.. Optimizing onalgorithm and flow of beam alignment in high power solid-state laser driver[J]. Chinese J. Lasers, 2010, 37(1): 78～81

[2] 赵维谦, 谭久彬, 邱丽蓉等. 激光光束特定方向准直方法与技术[J]. 光电子·激光, 2004, 15(1): 61～64

Zhao Weiqian, Tan Jiubin, Qiu Lirong et al.. Laser beam collimation method and technology in given beam direction[J]. J. Optoelectronics·Laser, 2004, 15(1): 61～64

[3] 亓波, 吴琼雁, 任戈等. 光路耦合对准方法[P]. 中国专利, 200910078257, 2009-7-15

Qi Bo, Wu Qiongyan, Ren Ge et al.. The Couple and Collimation Method of Light Path[P]. Chinese Patent, 200910078257, 2009-7-15

[4] 杨榕. 基于哈特曼传感器和快速倾斜镜的光路耦合对准技术[D]. 成都: 中国科学院光电技术研究所, 2011. 13～26

Yang Rong. The Method Based on the Hartmann-Sensor and Fast Tilt-Mirrors for the Coupling and Alignment of Optical Systems[D]. Chengdu: Institute of Optics and Electronics, Chinese Academy of Sciences, 2011. 13～26

[5] C. D. Kuglin, D. C. Hines. The phase correlation image alignment method[C]. IEEE 1975 Conf. Cybernetics and Society, 1975. 163～165

[6] 郑志彬, 叶中付. 基于相位相关的图像配准算法[J]. 数据采集与处理, 2006, 21(4): 444～448

Zheng Zhibin, Ye Zhongfu. Image registration algorithm based on phase-correlation[J]. J. Data Acquisition & Processing, 2006, 21(4): 444～448

[7] S. Chunhavittayatera, O. Chitsobhuk, K. Tongprasert. Image registration using Hough transform and phase correlation[C]. ICACT 2006, 2006, 2: 973～977

[8] 吴家谷. 基于数字图像的运动估计算法研究[D]. 杭州: 浙江大学, 2011: 38～41

Wu Jiagu. Research of Motion Estimation Algorithm Based on Digital Images[D]. Hangzhou: Zhejiang University, 2011. 38～41

[9] 高扬. 基于相位相关的亚像元目标定位方法研究[D]. 哈尔滨: 哈尔滨工程大学, 2006: 24～28

Gao Yang. Subpixel Target Location Method Based on Phase Correlation[D]. Harbin: Harbin Institute of Technology, 2006: 24～28

[10] R. C. Gonzalez. 数字图像处理(Matlab版)[M]. , 阮秋琦, 阮宇智译. 北京: 电子工业出版社, 2003. 104～110

R. C. Gonzalez. Digital Imaging Processing Using Matlab[M]. Ruan Qiuqi, Ruan Yuzhi Transl.. Beijing: Publishing House of Electronics Industry, 2003. 104～110

[11] 马晶, 徐科华, 谭立英. 深空光通信中的图像信标捕获技术[J]. 光学学报, 2006, 26(10): 1447～1452

Ma Jing, Xu Kehua, Tan Liying. Image beacon acquisition for deep space optical communication[J]. Acta Optica Sinica, 2006, 26(10): 1447～1452

[12] B. S. Reddy, B. N. Chatterji. An FFT-based technique for translation, rotation and scale-invariant image registration[J]. IEEE Trans. Image Processing, 1996, 3(8): 1266～1270

[13] Q. S. Chen, M. Dfris, F. Dconick. Symmetric phase-only matched filtering of Fourier-Mellin transforms for image registration and recognition[J]. IEEE Trans. Pattern Anal. Machine Intell., 1994, 16(12): 1156～1168

[14] 方俊伟, 翟超, 金熠. 相位相关法实现图像拼接的仿真与优化[J]. 计算机应用与软件, 2008, 25(1): 207～208

Fang Junwei, Zhai Chao, Jin Yi. Simulation andoptimization of phase correlation algorithm in image mosaics[J]. Computer Applications and Software, 2008, 25(1): 207～208

孙争, 沈锋. 光学系统中光瞳动态变化的测量[J]. 激光与光电子学进展, 2013, 50(5): 051204. Sun Zheng, Shen Feng. Measurement of Dynamically Changing Pupil in Optical System[J]. Laser & Optoelectronics Progress, 2013, 50(5): 051204.

光学系统中光瞳动态变化的测量

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