DocumentCode :
2132489
Title :
Image processing in seawater based on measured modulation transfer function
Author :
Yu, Yifan ; Lu, Xiaoli ; Wang, Xingming
Author_Institution :
Navy Submarine Acad., Qingdao, China
Volume :
2
fYear :
2003
fDate :
28-30 Aug. 2003
Firstpage :
712
Abstract :
In this paper, we restore the underwater scattering-degraded images based on the measured MTF using the parametric Wiener filter after compressing the noise of the images by Wavelet transformation according to the noise characteristic of underwater image system. We first present the MTF curves measured from various scattering water path lengths. The blurred image of a resolution target corresponding to the same system is captured and restored by the measured MTF using the parametric Wiener filter because parametric Wiener filter is quite effective for the uncertain-disturbance underwater image. Because the captured image always goes with noise that would generally result in ill-posed problems we try to remove the noise using chosen scale functions and wavelet functions before restoring the blurred image.
Keywords :
Wiener filters; image coding; image denoising; image resolution; image restoration; optical transfer function; seawater; visual communication; wavelet transforms; biorthogonal wavelet transform; blurred image resolution; ill-posed problem; image capturing; image processing; modulation transfer function; noise characteristic; noise image compression; noise removal; parametric Wiener filter; scale function; seawater; target resolution; uncertain-disturbance underwater image; underwater image system; underwater scattering-degraded image restoration; water path length scattering; wavelet function; wavelet transformation; Degradation; Image communication; Image processing; Image resolution; Image restoration; Light scattering; Linear systems; Sea measurements; Transfer functions; Wiener filter;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, Computers and signal Processing, 2003. PACRIM. 2003 IEEE Pacific Rim Conference on
Print_ISBN :
0-7803-7978-0
Type :
conf
DOI :
10.1109/PACRIM.2003.1235880
Filename :
1235880
Link To Document :
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