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

Published 30 Apr 2013 in math.CA and math.NA | (1304.7932v1)

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.

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