
Proceedings Paper
The research of underwater imaging based on the wavefront coding systemFormat | Member Price | Non-Member Price |
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Paper Abstract
Current research on the underwater imaging often needs particular techniques. Since the specificity of the underwater
imaging system, it must overcome the impact of the turbulent and turbid of the water. In this paper we present a new
application of the wavefront coding (WFC) system in the underwater imaging. Wavefront coding system is a two-step
imaging system, by using a cubic phase mask with optimized parameters; we get the defocus-insensitive intermediate
image in the imaging plane. Then the final sharp image can be obtained by deconvoluted the intermediate image with the
point spread function (PSF). Initially the wavefront coding system is introduced to extent the depth of the field of the
optical system and the allowance of the system can be great improved by using the optimized cubic phase mask. Because
of the defocus-insensitive property, this system can eliminate the aberration brought by the turbulent of the water. The
deconvolution can improve the imaging quality by deblurring intermediate image and reduce the impact brought by the
turbid of the water. In order to get excellent result, we propose to use the global generalized minimal residual method as
the deconvolution algorithm. Antireflective boundary conditions (BCs) are considered to eliminate ringing effect, and
Kronecker product approximation is introduced to reduce the computation consumption.
This method can give excellent deconvolution result. There is little ringing effect on the image border and little vibration
on the edge. Theory analysis and the experiment show that this is an effective system in the underwater imaging. It is an
economical system.
Paper Details
Date Published: 24 November 2009
PDF: 8 pages
Proc. SPIE 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology, 75131P (24 November 2009); doi: 10.1117/12.837844
Published in SPIE Proceedings Vol. 7513:
2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology
Toru Yoshizawa; Ping Wei; Jesse Zheng, Editor(s)
PDF: 8 pages
Proc. SPIE 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology, 75131P (24 November 2009); doi: 10.1117/12.837844
Show Author Affiliations
Qin-xiao Liu, Zhejiang Univ. (China)
Ting-yu Zhao, Zhejiang Univ. (China)
Ting-yu Zhao, Zhejiang Univ. (China)
Published in SPIE Proceedings Vol. 7513:
2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology
Toru Yoshizawa; Ping Wei; Jesse Zheng, Editor(s)
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