The Research of a Two-Directional Vector-Valued Quarternary Wavelet Packets and Applications in Material Engineering

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Abstract:

In this paper, we introduce a class of vector-valued four-dimensional wavelet packets according to a dilation matrix, which are generalizations of univariate wavelet packets. The defini -tion of biorthogonal vector four-dimensional wavelet packets is provided and their biorthogonality quality is researched by means of time-frequency analysis method, vector subdivision scheme and functional analysis method. Three biorthogonality formulas regarding the wavelet packets are established. Finally, it is shown how to draw new Riesz bases of space from these wavelet packets. The sufficient condition for the existence of four-dimensional wavelet packets is established based on the multiresolution analysis method.

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Advanced Materials Research (Volumes 712-715)

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2487-2492

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June 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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