Turkish Journal of Computer and Mathematics Education
Journal license

Journal

Turkish Journal of Computer and Mathematics Education


Volume
& Issue

Volume 11, Issue 3


Published
on


Pages

1585-1593


DOI

Article

Enhancing Satellite Imagesusing DT-CWT in Discrete and Redundant Wavelet Domain


Authors

G. Dhanalakshmi Affiliation:
Professor, Department of ECE, Siddhartha Institute of Technology and Sciences, Narapally, Hyderabad, Telangana
and Gopala Krishnan Affiliation:
Professor, Department of ECE, Siddhartha Institute of Technology and Sciences, Narapally, Hyderabad, Telangana


Abstract

In general, satellite images suffer from low resolution (LR) due to the environmental disturbances such as fog and haze, which will degrade the visual quality of the images. In order to find the location or the persons, someone needs to enhance these satellite images to improve the perceptual quality of images. In this a novel resolution enhancement (RE) approach for satellite images is proposed. The proposed approach employed a dual tree complex wavelet transform (DT-CWT) based fusion algorithm in discrete and redundant wavelet domain to obtain a high resolute (HR) satellite images. Majorly, there are two stages in this algorithm, which includes the enhancement of a LR satellite images by enforcing the concept of both discrete and redundant wavelet (DRW) transforms together. Afterwards, this enhanced HR satellite image is given as a one of the source images to the approach of DT-CWT based image fusion for further enhancement of HR satellite image. Experimental analysis shown that the proposed fusion based satellite image enhancement is performed superior to the conventional wavelet-based approaches like DWT-RE and DRWT-RE in terms of peak signal to noise ratio (PSNR), mean square error (MSE) and structural similarity (SSIM) index.


Keywords

Satellite imaging, resolution enhancement, discrete wavelet transform, redundant wavelet transform, complex wavelet transform, dual-tree complex wavelet transform, PSNR, SSIM and MSE


Citation

(2020). Enhancing satellite imagesusing DT-CWT in discrete and redundant wavelet domain. Turkish Journal of Computer and Mathematics Education, 11(3), 1585–1593.

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