The near shift-invariance of the dual-tree complex wavelet transform revisited

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS

卷:389

Article

Barri, Adriaan^1,2  Dooms, Ann^1,2  Schelkens, Peter^1,2 

[1] Vrije Univ Brussel, Dept Elect & Informat ETRO, B-1050 Brussels, Belgium

[2] Interdisciplinary Inst Broadband Technol IBBT, Dept Future Media & Imaging FMI, B-9050 Ghent, Belgium

关键词: Dual-tree complex wavelet transform;    Modulated;    Shift-variance;   

DOI  :  10.1016/j.jmaa.2012.01.010

来源: Elsevier

【 摘 要 】

The dual-tree complex wavelet transform (DT-CWT) is an enhancement of the conventional discrete wavelet transform (DWT) due to a higher degree of shift-invariance and a greater directional selectivity, finding its applications in signal and image processing. This paper presents a quantitative proof of the superiority of the DT-CWT over the DWT in case of modulated wavelets. (C) 2012 Elsevier Inc. All rights reserved.

【 授权许可】

Free