The Fine Characters of a Sort of Biorthogonal Four-Dimensional Nonseparable Wavelet Packs

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In this article, the notion of orthogonal nonseparable four-dimensional wavelet packs, which is the generalization of orthogonal univariate wavelet packs, is introduced. A new approach for constructing them is presented by iteration method and wavelets as well wavelet frames. The biorthogonality properties of four-dimensi- -onal wavelet packets are discussed. Three biorthogonality formulas concerning these wavelet packs are estabished. A necessary and sufficient condition for the existence of the pyramid decomposition scheme of space is presented.

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7-12

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December 2010

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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