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A Dual Tree Complex Wavelet Transform Construction and Its Application to Imagesing
Sathesh, Samuel Manoharan
Pages - 293 - 300     |    Revised - 30-12-2009     |    Published - 31-01-2010
Volume - 3   Issue - 6    |    Publication Date - January 2010  Table of Contents
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KEYWORDS
Complex Discrete Wavelet Transform (CDWT), Dual-Tree, Filter Bank, Shift Invariance, Optimal Thresholding
ABSTRACT
This paper discusses the application of complex discrete wavelet transform (CDWT) which has significant advantages over real wavelet transform for certain signal processing problems. CDWT is a form of discrete wavelet transform, which generates complex coefficients by using a dual tree of wavelet filters to obtain their real and imaginary parts. The paper is divided into three sections. The first section deals with the disadvantage of Discrete Wavelet Transform (DWT) and method to overcome it. The second section of the paper is devoted to the theoretical analysis of complex wavelet transform and the last section deals with its verification using the simulated images.
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Mr. Sathesh
- India
Dr. Samuel Manoharan
- India