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Title: An algorithm for matrix extension and wavelet construction
Authors: Lawton, W. 
Lee, S.L. 
Shen, Z. 
Keywords: Matrix extension
Issue Date: Apr-1996
Citation: Lawton, W., Lee, S.L., Shen, Z. (1996-04). An algorithm for matrix extension and wavelet construction. Mathematics of Computation 65 (214) : 723-737. ScholarBank@NUS Repository.
Abstract: This paper gives a practical method of extending an n x r matrix P(z), r ≤ n, with Laurent polynomial entries in one complex variable z, to a square matrix also with Laurent polynomial entries. If P(z) has orthonormal columns when z is restricted to the torus T, it can be extended to a paraunitary matrix. If P(z) has rank r for each z ∈ T, it can be extended to a matrix with nonvanishing determinant on T. The method is easily implemented in the computer. It is applied to the construction of compactly supported wavelets and prewavelets from multiresolutions generated by several univariate scaling functions with an arbitrary dilation parameter.
Source Title: Mathematics of Computation
ISSN: 00255718
DOI: 10.1090/S0025-5718-96-00714-4
Appears in Collections:Staff Publications

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