Blind image deconvolution by recursive function approximation

碩士 === 國立東華大學 === 應用數學系 === 97 === In this paper, we explore blind image deconvolution by recursive function approximation based on supervised learning of neural networks, under the assumption that a degraded image is linear convolution of an original source image through a linear shift-invariant (L...

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Bibliographic Details
Main Authors: Hsiao-Chang Chen, 陳孝昌
Other Authors: Jiann-Ming Wu
Format: Others
Language:en_US
Published: 2009
Online Access:http://ndltd.ncl.edu.tw/handle/92347955650595923069
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Summary:碩士 === 國立東華大學 === 應用數學系 === 97 === In this paper, we explore blind image deconvolution by recursive function approximation based on supervised learning of neural networks, under the assumption that a degraded image is linear convolution of an original source image through a linear shift-invariant (LSI) blurring matrix. Now, we employ learning an RBF (radial basis functions) neural network to construct an embedded recursive function within a blurring image, try to extract non-deterministic component of an original source image, and use them to estimate hyper parameters of a linear image degradation model. Based on the estimated blurring matrix, we further apply an annealed Hopfield neural network to reconstruct an original source image from a blurred image. By numerical simulations, the proposed novel method is shown e ective for faithful estimation of an unknown blurring matrix and restoration of an original source image.