Zhang, Y and Kingsbury, N (2009) Image deconvolution using a Gaussian scale mixtures model to approximate the wavelet sparseness constraint. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. pp. 681-684. ISSN 1520-6149Full text not available from this repository.
This paper proposes to use an extended Gaussian Scale Mixtures (GSM) model instead of the conventional ℓ1 norm to approximate the sparseness constraint in the wavelet domain. We combine this new constraint with subband-dependent minimization to formulate an iterative algorithm on two shift-invariant wavelet transforms, the Shannon wavelet transform and dual-tree complex wavelet transform (DTCWT). This extented GSM model introduces spatially varying information into the deconvolution process and thus enables the algorithm to achieve better results with fewer iterations in our experiments. ©2009 IEEE.
|Divisions:||Div F > Signal Processing and Communications|
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|Date Deposited:||09 Dec 2016 17:13|
|Last Modified:||23 Jan 2017 06:16|