DocumentCode :
1436242
Title :
Discrete Wavelet Transform-Based Satellite Image Resolution Enhancement
Author :
Demirel, Hasan ; Anbarjafari, Gholamreza
Author_Institution :
Dept. of Electr. & Electron. Eng., Eastern Mediterranean Univ., Mersin, Turkey
Volume :
49
Issue :
6
fYear :
2011
fDate :
6/1/2011 12:00:00 AM
Firstpage :
1997
Lastpage :
2004
Abstract :
Satellite images are being used in many fields of research. One of the major issues of these types of images is their resolution. In this paper, we propose a new satellite image resolution enhancement technique based on the interpolation of the high-frequency subbands obtained by discrete wavelet transform (DWT) and the input image. The proposed resolution enhancement technique uses DWT to decompose the input image into different subbands. Then, the high-frequency subband images and the input low-resolution image have been interpolated, followed by combining all these images to generate a new resolution-enhanced image by using inverse DWT. In order to achieve a sharper image, an intermediate stage for estimating the high-frequency subbands has been proposed. The proposed technique has been tested on satellite benchmark images. The quantitative (peak signal-to-noise ratio and root mean square error) and visual results show the superiority of the proposed technique over the conventional and state-of-art image resolution enhancement techniques.
Keywords :
deconvolution; discrete wavelet transforms; geophysical image processing; interpolation; remote sensing; DWT based satellite image resolution enhancement; discrete wavelet transform; high frequency subband images; high frequency subband interpolation; image interpolation; input image decomposition; low resolution image; new satellite image resolution enhancement technique; satellite benchmark images; Continuous wavelet transforms; Discrete wavelet transforms; Image edge detection; Image resolution; Interpolation; Satellites; Discrete wavelet transform (DWT); interpolation; satellite image resolution enhancement; wavelet zero padding (WZP);
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
Publisher :
ieee
ISSN :
0196-2892
Type :
jour
DOI :
10.1109/TGRS.2010.2100401
Filename :
5702359
Link To Document :
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