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Using the mother wavlet $phi$ one obtains an orthonormal basis $\phi_{j,k}(x):=2^{j/2}\,\phi(2^j\,x-k)$of L^2 (on the unit interval say). Given a function $f$ on can calculate the coefficients using the $L^2$ inner product. For the Fourier series on can use the discrete fourier transform to do this. How can the discrete wavlet transform be used to calculate the coefficients, here? Does anyone know a good reference?

Thanks,

warsaga

edited Jun 12 at 1:13

PaPiro
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asked May 4 2012 at 16:32

warsaga
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	For practitioners I recommend Mallat's "Wavelet Tour of Signal Processing". – Dirk May 4 2012 at 18:26
	In the way you stated the question it is to vague: I think if you would make it more precise, then it will attract more attention. – Kirill Shmakov May 4 2012 at 19:14

warsaga · Answer 1 · 2012-05-13 16:58:16Z UTC

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The best reference I found was www2.isye.gatech.edu/~brani/wp/kidsA.pdf

Still not completly satisfactory since the discrete Wavlet transform of the Wavelet psi funciton should just yield one nonzero coefficient.

answered May 13 2012 at 16:58

warsaga
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Andrei MF · Answer 2 · 2012-06-26 08:31:23Z UTC

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Take a look also at a nice paper "Discrete Wavelet Transformations and Undergraduate Education" at http://www.ams.org/notices/201105/rtx110500656p.pdf.

answered Jun 26 at 8:31

Andrei MF
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Discrete Wavelet Transform and L2 Basis

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