The near shift-invariance of the dual-tree complex wavelet transform revisited
arXiv:1304.7932 · doi:10.1016/j.jmaa.2012.01.010
Abstract
The dual-tree complex wavelet transform (DTCWT) 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 DTCWT over the DWT in case of modulated wavelets.
15 pages