[2] Freeman W T，Jones T R，Pasztor E C. Example-based super-resolution [J]. IEEE Computer Graphics and Applications (S0272-1716)，2002，22(2)：56-65．
[3] PAN Zongxu，YU Jing，XIAO Chuangbai，et al. Single Image Super Resolution Based on Adaptive Multi-Dictionary Learning [J]. Acta Electronica Sinica，2015，43(2)：209-216.
[4] LIAN Qiusheng，SHI Baoshun，CHEN Shuzhen. Research Advances on Dictionary Learning Models，Algorithms and Applications [J]. Acta Automatica Sinica，2015，41(2)：240-260.
[5] YANG Jianchao，John W，Thomas H，et al. Image Super-Resolution via Sparse Representation [J]. IEEE Transactions on Image Processing：a Publication of the IEEE Signal Processing Society(S1057-7149)，2010，19(11)：2861-2873.
[6] Zeyde R，Elad M，Protter M. On Single Image Scale-Up Using Sparse-Representations [C]// Proceedings of International Conference on Curves and Surfaces，Springer-Verlag，2010：711-730.
[7] DENG Chengzhi，TIAN Wei，CHEN Pan，et al. Infrared Image Super-resolution via Locality-constrained Group Sparse Model [J]. Acta Physica Sinica，2014，63(4)：044202-1-044202-8.
[8] DONG Weisheng，ZHANG Lei，SHI Guangming，et al. Image Deblurring and Super-resolution by Adaptive Sparse Domain Selection and Adaptive Regularization [J]. IEEE Transactions on Image Processing：a Publication of the IEEE Signal Processing Society(S1057-7149)，2011，20(7)：1838-1857.
[9] DONG Weisheng，ZHANG Lei，Lukac R，et al. Sparse Representation Based Image Interpolation with Nonlocal Autoregressive Modeling [J]. IEEE Transactions on Image Processing(S1057-7149)，2013，22(4)：1382-1394.
[10] ZHANG Jian，ZHAO Debin，GAO Wen. Group-based Sparse Representation for Image Restoration [J]. IEEE Transactions on Image Processing：a Publication of the IEEE Signal Processing Society(S1057-7149)，2014，23(8)：3336-3351.
[11] Zoran D，Weiss Y. From Learning Models of Natural Image Patches to Whole Image Restoration [C]// Proceedings of IEEE International Conference on Computer Vision，Barcelona，Spain，Nov 6-13，2011：479-486.
[12] Papyan V，Elad M. Multi-Scale Patch-Based Image Restoration [J]. IEEE Transactions on Image Processing：a Publication of the IEEE Signal Processing Society(S1057-7149)，2016，25(1)：249-261.
[13] YUE Jia ，WANG Shitong. Algorithm EM and Its Initialization in Gaussian-Mixture-Model Based Clustering [J]. Microcomputer Information，2006，22(11-3)：244-246.
[14] Candes E J，Wakin M B，Boyd S P. Enhancing Sparsity by Reweighted L1 Minimization [J]. Journal of Fourier Analysis & Applications(S1069-5869)，2007，14(5/6)：877-905.
[15] Daubechies I，Defrise M，Mol C D. An Iterative Thresholding Algorithm for Linear Inverse Problems with a Sparsity Constraint [J]. Communications on Pure & Applied Mathematics(S0010-3640)，2003，57(11)：1413–1457.
