waveslim 1.4 has recently been uploaded to CRAN and is fully compatible
with Rv2.0. Besides ensuring usability with the most recent version of R,
two additional "flavors" of wavelet methodology have been added to the
package: (1) Hilbert wavelet pairs and (2) the dual-tree complex wavelet
transform [only 1D and 2D ported from Matlab code by Selesnick]. The
dual-tree CWT code has not been optimized for R (only a "direct" port from
Matlab) so reasonable speed-ups are anticipated in the future.
Comments/bug reports are welcome.
References for (1) include:
Selesnick, I.W. (2001). Hilbert transform pairs of wavelet bases. IEEE
Signal Processing Letters 8 (6), 170–173.
Selesnick, I.W. (2002). The design of approximate Hilbert transform pairs
of wavelet bases. IEEE Transactions on Signal Processing 50 (5),
1144–1152.
Whitcher, B. and P.F. Craigmile (2004). Multivariate Spectral Analysis
Using Hilbert Wavelet Pairs, International Journal of Wavelets,
Multiresolution and Information Processing, 2 (4), in press.
References for (2) include:
Kingsbury, N. (1999). Image processing with complex wavelets. Proceedings
of the Royal Society of London, Series A, 357, 2543–2560.
Kingsbury, N. (2001). Complex wavelets for shift invariant analysis and
filtering of signals. Applied and Computational Harmonic Analysis, 10 (3),
234–253.
cheers...
Brandon
Brandon Whitcher, PhD
Translational Medicine & Technology
GlaxoSmithKline
Greenford Road
Greenford UB6 0HE, United Kingdom
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