We consider the recent suggestion that spectrum estimation can be accomplished by applying wavelet denoising methodology to wavelet packet coefficients derived from the logarithm of a spectrum estimate. The particular algorithm we consider consists of computing the logarithm of the multitaper spectrum estimator, applying an orthonormal transform derived from a wavelet packet table to the log mu...

Internet paths sharing the same congested link can be identified using several shared congestion detection techniques. The new technique which is proposed in this paper depends on previous novel (delay correlation with wavelet denoising (DCW) method called Discrete Multiwavelet Transform (DMWT) as signal to separate between queuing delay caused by network and various other variations. provides ...

The partitioning of turbulent perturbations into a \low-dimensional" part responsible for much of the turbulent energy and uxes and a \high-dimensional" passive part that contributes little to turbulent energy and transport dynamics is investigated using atmospheric surface layer (ASL) measurements. It is shown that such a partitioning scheme can be achieved by transforming the ASL measurements...

Wavelet packets are well-known for their ability to compactly represent textures consiting of oscillatory patterns such as fingerprints or striped cloth. In this paper, we report recent work on representing both periodic and granular types of texture using adaptive wavelet basis functions. The discrimination power of a wavelet packet subband can be defined as its ability to differentiate betwee...

This paper uses some basic concepts and results on harmonic analysis associated with Heckman-Opdam theory \(\mathbb {R}^{d}\) to study types of wavelet packets the corresponding transforms. More precisely, we two transforms related hypergeometric Fourier transform W-invariant functions, prove Plancherel, Calderón, reconstruction formulae for these

The eyes are important facial landmarks, both for image normalization due to their relatively constant interocular distance, and for post processing due to them anchoring model-based schemes. This paper introduces a novel approach for the eye detection task using optimal wavelet packets for eye representation and Radial Basis Functions (RBFs) for subsequent classification (’labeling’) of facial...