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Super-resolution reconstruction algorithm based on multi-component dictionary and sparse representation


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Super-resolution reconstruction algorithm based on multi-component dictionary and sparse representation
Liu ZiSong XiaoningYu DongjunTang Zhenmin
School of Computer Science and Engineering,NUST,Nanjing 210094,China
super-resolution sparse representation multi-component dictionary
In order to solve the problem of super-resolution reconstruction of single image,a hybrid approach is presented under the framework of sparse representation with multi-component dictionary.According to the image degradation model,the algorithms focus on the relationship between the low-resolution images and high-resolution images.This paper concludes that the high-resolution images can be reconstructed by the coefficients of low-resolution images in the corresponding dictionary.The sparse coefficients are obtained by the method of match pursuit based on the multi-component dictionary which indicates different structural characteristics of the image.The high-resolution images are reconstructed in the corresponding high-resolution dictionary.This paper introduces an objective and new strategy capable of efficiently guiding the image restoration.Extensive experimental studies conducted on the nature and cartoon images show the effectiveness of the proposed method.


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Last Update: 2014-02-28