第19卷第5期 2011年5月
文章编号1004-924X(2011)05-1165-06
光学精密工程
Optics and Precision Engineering
相位差异散斑法图像复原技术
Vol.19No.5
May2011
王建立1*，汪宗洋1.2，王斌"，吴元昊"，赵金宇1，李宏壮1，董磊1，张世学1
（1.中国科学院长春光学精密机械与物理研究所，吉林长春130033；
2.中国科学院研究生院，北京100039)
道的单赖短曝光图像来估算波前相位畸变，结合夏克哈特曼波前探测器设计了针对扩展目标的相位差异散斑法高分辨率成像和相位估计对比实验，通过定量移动高精密平移台获得焦面和离焦面图像，并将解算的波前面形与夏克哈特曼波前探测器实测的波前面形进行对比，验证了相位差异散斑法提高图像分辨率和正确解算波前相位的能力。实验结果表明，估算的波前相位面形和夏克哈特曼实测面形趋势有较好的一致性，恢复后图像分辨率提高了12%，表明该方法是大口径光电成像系统较为理想的图像恢复技术之一。
关键调：相位差异散斑；波前时变；图像恢复；相位估计
中图分类号：TP391.4
文献标识码：A
doi:10.3788/OPE.20111905.1165
Imagerestorationbyphase-diversespeckle
WANG Jian-li'', WANG Zong-yang'-, WANG Bin', WU Yuan-hao',
ZHAO Jin-yu', LI Hong-zhuang',DONG Lei', ZHANG Shi-xue(1.ChangchunInstituteof Optics,FineMechanicsandPhysics,
ChineseAcademyof Sciences,Changchun130033,China;
2.GraduateUniversity of ChineseAcademy of Science,Beijing 100039,China)
*Correspondingauthor,E-mail;wangjianli@ciomp.ac.cn
Abstract: In order to overcome the wave-front distortion caused by atmosphere turbulence and optical system aberration, the Phase-Diverse Speckle (PDS)method was used to collect simultaneouslly two or more short-exposure optical images formed by focusing or defocusing to estimate both the object and the wave-front phases, To verify the improvement of image resolution and phase estimation of PDS method,a comparison experiment on high-resolution imaging and phase estimation comparison was carried out based the PDS method and a Shack-Hartmann sensor. By shifting the high accurate trans-lation stage at a certain distance,the focusing and defocusing images were obtained,then the wavefront phase based on the image was camparied with that from the Shack-Hartmann sensor. Experiment re-sults indicate that the estimated wave-front phase is highly according with that detected by Shack-Hartmann and the resolution of the restored image can increase by 12% compared with the origin im
收稿日期：2010-10-12；修订日期：2010-10-29
基金项目：国家863高技术研究发展计划资助项目（No.2009A.A8080603）