LWT based Image Super Resolution

Abstract

This paper presents an effective approach to recover a high resolution image from a single low resolution input image. In this technique lifting wavelet transform and stationary wavelet transform is used to increase the spatial resolution .The wavelet domain filters support to model the regularity of natural images while the edge details of image get sharper while up sampling. An iterative back projection method is used to reconstruct the high resolution image in an efficient iterative manner. Experimental results demonstrate that the proposed approach is very effective in increasing resolution compared to state-of-art super-resolution algorithms.