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Ringing artifact reduction in blind image deblurring and denoising problems by regularization methods
Published in
2009
Pages: 333 - 336
Abstract
Image deblurring and denoising are the main steps in early vision problems. A common problem in deblurring is the ringing artifacts created by trying to restore the unknown point spread function (PSF). The random noise present makes this task even harder. Variational blind deconvolution methods add a smoothness term for the PSF as well as for the unknown image. These methods can amplify the outliers correspond to noisy pixels. To remedy these problems we propose the addition of a first order reaction term which penalizes the deviation in gradients. This reduces the ringing artifact in blind image deconvolution. Numerical results show the effectiveness of this additional term in various blind and semi-blind image deblurring and denoising problems. © 2009 IEEE.
About the journal
JournalProceedings of the 7th International Conference on Advances in Pattern Recognition, ICAPR 2009
Open AccessNo
Concepts (17)
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    Convolution
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    Pattern recognition
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    Blind deconvolution
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    Blind image deconvolution
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    Common problems
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    DE-BLURRING
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    EARLY VISIONS
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    FIRST-ORDER REACTIONS
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    Image de-blurring
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    NOISY PIXELS
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    Numerical results
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    POINT-SPREAD FUNCTIONS
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    RANDOM NOISE
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    Regularization methods
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    Ringing artifacts
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    SEMI BLINDS
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    Optical transfer function