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Chin. Opt. Lett.
 Home  List of Issues    Issue 01 , Vol. 04 , 2006    Complex-wave retrieval based on blind signal separation

Complex-wave retrieval based on blind signal separation
Xiaodong Chai1;2, Chengpeng Zhou2, Zhaoyan Feng2, Yinhua Wang2, Yansheng Zuo
1Department of Electronic Science and Technology, [University of Science and Technology of China], Hefei 230026
2Key Laboratory of Intelligent Computing and Signal Processing, Ministry of Education, [Anhui University], Hefei 230039

Chin. Opt. Lett., 2006, 04(01): pp.11-14-4

Keywords(OCIS Code): 090.0090  070.0070  350.6980  

In the process of the reconstruction of digital holography, the traditional methods of diffraction and filtration are commonly adopted to recover the original complex-wave signal. Influenced by twin-image and zero-order terms, the above-mentioned methods, however, either limit the field of vision or result in the loss of the amplitude and phase. A new method for complex-wave retrieval is presented, which is based on blind signal separation. Three frames of holograms are captured by a charge coupled device (CCD) camera to form an observation signal. The term containing only amplitude and phase of complex-wave is separated, by means of independent component analysis, from the observation signal, which effectively eliminates the zero-order term. Finally, the complex-wave retrieval of pure phase wavefront is achieved. Experimental results show that this method can better recover the amplitude and phase of the original complex-wave even when there is a frequency spectrum mixture in the hologram.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Get Citation: Xiaodong Chai, Chengpeng Zhou, Zhaoyan Feng, Yinhua Wang, Yansheng Zuo, "Complex-wave retrieval based on blind signal separation," Chin. Opt. Lett. 04(01), 11-14-4(2006)

Note: This work was supported by the National Natural Science Foundation of China (No. 60572129), and the post-doctor's fund subsidy of "the action plan of vitalizing education towards the 21st century" of University of Science and Technology of China. X. Chai's e-mail address is cxdyj@163.com.


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