Journal article Open Access

Hybrid Regularization Algorithm for Efficient Image Deblurring

Pooja S.; Mallikarjunaswamy S.; Sharmila N.


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        <foaf:name>Mallikarjunaswamy S.</foaf:name>
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            <foaf:name>Assistant Professor, Department of ECE, JSS Academy of Technical Education, Bengaluru, India.</foaf:name>
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        <foaf:name>Sharmila N.</foaf:name>
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            <foaf:name>Assistant Professor, Department of ECE, RNSIT, Bengaluru, India.</foaf:name>
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    <dct:title>Hybrid Regularization Algorithm for Efficient Image Deblurring</dct:title>
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    <dcat:keyword>Image Priors, Maximum A Posteriori Estimation, Regularization</dcat:keyword>
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    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2021-08-30</dct:issued>
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    <dct:description>&lt;p&gt;Abstract: Image deblurring is a challenging illposed problem with widespread applications. Most existing deblurring methods make use of image priors or priors on the PSF to achieve accurate results. The performance of these methods depends on various factors such as the presence of well-lit conditions in the case of dark image priors and in case of statistical image priors the assumption the image follows a certain distribution might not be fully accurate. This holds for statistical priors used on the blur kernel as well. The aim of this paper is to propose a novel image deblurring method which can be readily extended to various applications such that it effectively deblurs the image irrespective of the various factors affecting its capture. A hybrid regularization method is proposed which uses a TV regularization framework with varying sparsity inducing priors. The edges of the image are accurately recovered due to the TV regularization. The sparsity prior is implemented through a dictionary such that varying weights of sparsity is induced based on the different image regions. This helps in smoothing the unwanted artifacts generated due to blur in the uniform regions of the image.&amp;nbsp;&lt;/p&gt;</dct:description>
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