DWT and SWT based Image Super Resolution without Degrading Clarity

Abstract

This project presents a self-similarity-based approach that is able to use large groups of similar patches extracted from the input image to solve the SISR problem. It introduce a novel prior leading to the collaborative filtering of patch groups in a 1D similarity domain and couple it with an iterative back-projection framework. The performance of the proposed algorithm is evaluated on a number of SISR benchmark data sets. Without using any external data, the proposed approach outperforms the current non-convolutional neural network-based methods on the tested data sets for various scaling factors. As an extension of this project, Discrete and Stationary Wavelet Decomposition is proposed to improve accuracy levels

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