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Abstract
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Article Information:
Comparison of Satellite Image Enhancement Techniques in Wavelet Domain
K. Narasimhan, V. Elamaran, Saurav Kumar, Kundan Sharma and Pogaku Raghavendra Abhishek
Corresponding Author: K. Narasimhan
Submitted: March 18, 2012
Accepted: April 14, 2012
Published: December 15, 2012 |
Abstract:
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In this study, a comparison of various existing satellite image resolution enhancement techniques
in wavelet domain is done. Each method is analysed quantitatively and visually. There are various wavelet
domain based methods such as Wavelet Zero Padding, Dual Tree-Complex Wavelet Transform, Discrete
Wavelet Transform, Cycle Spinning and Undecimated Wavelet Transform. On the basis of analysis, the most
efficient method is proposed. The algorithms take the low resolution image as the input image and then wavelet
transformation using daubechies (db3) is used to decompose the input image into different sub band images
containing high and low frequency component. Then these subband images along with the input image are
interpolated followed by combining all these images to generate a new resolution enhanced image by an inverse
process.
Key words: Cycle Spinning (CS), Discrete Wavelet Transform (DWT), Dual Tree-Complex Wavelet Transforms (DT-CWT), High Resolution (HR), Low Resolution (LR), Undecimated Wavelet Transform (UWT), Wavelet Zero Padding (WZP)
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Cite this Reference:
K. Narasimhan, V. Elamaran, Saurav Kumar, Kundan Sharma and Pogaku Raghavendra Abhishek, . Comparison of Satellite Image Enhancement Techniques in Wavelet Domain. Research Journal of Applied Sciences, Engineering and Technology, (24): 5492-5496.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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