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Proceedings Paper

Enhanced RL-IBD algorithm for image restoration
Author(s): Bo Chen; Ze-xun Geng; Shu-long Zhu; Yang Yang
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Paper Abstract

The performance of high-resolution imaging with large optical instruments is severely limited by atmospheric turbulence. Image deconvolution such as iterative blind deconvolution (IBD) and Richardson-Lucy (RL) deconvolution are required. The IBD method involves the imposition of constraints such as conservation of energy, positivity, and finite support, with known size, alternately on the image and the PSF in the spatial and Fourier domains, until convergence. The iterative RL solution converges to the maximum likelihood solution for Poisson statistics in the data. Properties of the RL algorithm which make it well-suited for IBD are energy conservation and the sustenance of nonnegativity. So, RL was incorporated into the IBD framework. In this paper, an enhanced Richardson-Lucy-based iterative blind deconvolution (ERL-IBD) algorithm is proposed to restore the blurred images due to atmospheric turbulence. The ERLIBD incorporates dynamic PSF support estimation, bandwidth constraint of optical system, and the asymmetry factor update. The experimental results demonstrate that the ERL-IBD algorithm works better than IBD algorithm in deconvolution of the blurred-turbulence image.

Paper Details

Date Published: 29 December 2008
PDF: 9 pages
Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 72851M (29 December 2008); doi: 10.1117/12.815892
Show Author Affiliations
Bo Chen, Information Engineering Univ. (China)
Guilin Air Force Academy (China)
Ze-xun Geng, Information Engineering Univ. (China)
Shu-long Zhu, Information Engineering Univ. (China)
Yang Yang, Guilin Air Force Academy (China)

Published in SPIE Proceedings Vol. 7285:
International Conference on Earth Observation Data Processing and Analysis (ICEODPA)
Deren Li; Jianya Gong; Huayi Wu, Editor(s)

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