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1. M. Almeida and M. Figueiredo, Parameter estimatio n for blind and nonblind deblurring using residual whiteness measures, IEEE Trans. Image Processing, vol. 22, pp. 2751 ­2763, 2013. 2. J. Oliveira, J. M. Bioucas-Dia, and M. Figueiredo, Adaptive total variation image deblurring: A majorization-minimization approach, Signal Process., vol. 89, pp. 1683­1693, 2009. 3. S. D. Babacan, R. Molina, and A. K. Katsaggelos, Variational Bayesian blind deconvolution using a total variation prior, IEEE Trans. Image Process., vol. 18, pp. 12­26, 2009. 4. Y. T. et al., Nonlinear camera response functions and image deblurring: Theoretical analysis and practice, IEEE Trans. Pattern Analysis and Machine Intelligence, vol. 35, pp. 2498­2512, 2013. 5. H. Hu and G. de Haan, Low cost robust blur estimator, in IEEE International Conference on Image Processing, 2006, pp. 617­620. 6. A. A. Chernomorets and A. V. Nasonov, Deblurring in fundus images, in 22-th Int. Conf. GraphiCon'2012, Moscow, Russia, 2012, pp. 76­79. 7. J. Canny, A computational approach to edge detection, IEEE Trans. Pattern Analysis and Machine Intelligence, vol. 8, pp. 679­698, 1986. 8. A. A. A. . , , , 42, . 76­82, 2013. 9. A. V. Nasonov and A. S. Krylov, Edge quality metrics for image enhancement, Pattern Recognition and Image Analysis, vol. 22, pp. 346­353, 2012.