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Blind image deblurring based on multi-resolution ringing removal
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DOI：10.1016/j.sigpro.2018.09.015.png)
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In this paper, a blind deblurring algorithm that is well converged towards the latent sharp image and the blur PSF is proposed. The proposed algorithm employs our recently proposed ringing suppression regularizer in a solution to the blind deblurring problem. Latent sharp image and the blur PSF are estimated jointly via a multi-functional optimization problem addressed by a first-order primal-dual solver. This approach generates a multi-resolution pyramid of the input blurred image and propagates the estimation results of the lower resolution levels to the higher resolution ones. By considering the PSF initiation as an important step in the blind deblurring process, we introduce a PSF initiation method that benefits from the salient structure obtained via an 10-gradient smoothing of blurred image. A first-order primal dual solution to the 10-gradient smoothing problem is introduced in this paper. Experimental results show that the proposed deblurring algorithm significantly enhances the results favorably against other state-of-the-art image deblurring methods. (C) 2018 Elsevier B.V. All rights reserved.
Keyword:
PSF estimation
Blind image Deblurring
Primal-dual
Ringing artifacts
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