Restoration of image degraded by the atmospheric turbulence

Details Restoration of image degraded by the atmospheric turbulence Restoration of image degraded by the atmospheric turbulence

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5981..167h&link_type=abstract

Optics in Atmospheric Propagation and Adaptive Systems VIII. Edited by Stein, Karin; Kohnle, Anton. Proceedings of the SPIE, V

Physics

Optics

Scientific paper

This paper presents a speckle image restoration algorithm using wavelet transform. Based on the wavelet theory, a new gauss PSF accurate estimation is put forward. Firstly, wavelet with varied scales is transformed, after which the local maxima of the modulus of the wavelet are computed respectively. Secondly, on the basis of the relation deduced among the local maxima of the modulus of the wavelet at different scales, Lipschitz exponent and variance, the variance of a Gaussian point spread function is computed. According to Fried theory, the Fried parameter can be deduced from the variance. From the Fried parameter we could estimate the optical transfer function of the turbulence. Row action projection Method is applied to restore the image through atmosphere over a distance of 1 km. Primary results are obtained.

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