Regularization Super-Resolution with Inaccurate Image Registration
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概要
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Considering the inaccuracy of image registration, we propose a new regularization restoration algorithm to solve the ill-posed super-resolution (SR) problem. Registration error is used to obtain cross-channel error information caused by inaccurate image registration. The registration error is considered as the noise mean added into the within-channel observation noise which is known as Additive White Gaussian Noise (AWGN). Based on this consideration, two constraints are regulated pixel by pixel within the framework of Millers regularization. Regularization parameters connect the two constraints to construct a cost function. The regularization parameters are estimated adaptively in each pixel in terms of the registration error and in each observation channel in terms of the AWGN. In the iterative implementation of the proposed algorithm, sub-sampling operation and sampling aliasing in the detector model are dealt with respectively to make the restored HR image approach the original one further. The transpose of the sub-sampling operation is implemented by nearest interpolation. Simulations show that the proposed regularization algorithm can restore HR images with much sharper edges and greater SNR improvement.
- (社)電子情報通信学会の論文
- 2009-01-01
著者
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Yan Hua
School Of Engineering Yemaguchi University
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Yan Hua
School Of Computer Science And Technology Shandong Economic University
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LIU Ju
School of Information Science and Engineering, Shandong University
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SUN Jian-de
School of Information Science and Engineering, Shandong University
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Liu Ju
School Of Information Science And Engineering Shandong University
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Sun Jian-de
School Of Information Science And Engineering Shandong University
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