Title: Effective satellite image enhancement based on the discrete wavelet transform

Authors: R. Vani; K. Soundara Rajan

Addresses: Jawaharlal Technological University, Andhra Pradesh, Anantapuramu, A.P., India ' Jawaharlal Technological University, Andhra Pradesh, Anantapuramu, A.P., India

Abstract: Satellite image enhancement and restoration is scientifically possible by applying image processing and other soft computing techniques. In this study, a comparison of various existing satellite image resolution enhancement techniques in wavelet domain has been done. I propose a new satellite image enhancement technique based on DCWT-GWO. The novel technique employs the duel tree complex wavelets which, in relation to the classical wavelets, permit a faster execution of the wavelet transforms and furnish incredible flexibility in the generation of the wavelets. An effective system for noise reduction have designed in the backdrop of diverse categories of noise, where an optimal threshold is chosen for each sub band at diverse scales by means of the Gray Wolf optimisation (GWO) algorithm. The optimal threshold will denoise the image effectively. The fitness of the optimisation algorithm determine the quality of the image.

Keywords: satellite image enhancement; discrete complex wavelet transform; Gray Wolf optimisation; GWO.

DOI: 10.1504/IJBIS.2020.105834

International Journal of Business Information Systems, 2020 Vol.33 No.4, pp.446 - 471

Received: 25 May 2017
Accepted: 31 Mar 2018

Published online: 16 Mar 2020 *

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