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Fast transform

Optimization of a Fast Transform Structured as a Convolutional Tree

Optimization of a Fast Transform Structured as a Convolutional Tree

... fast transform. Famous examples include the discrete co- sine transform, the fast wavelet transform (see [Mal99], for a review) or the curvelet transform ...

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Convolutional Trees for Fast Transform Learning

Convolutional Trees for Fast Transform Learning

... for fast transform learning, we build a tree based on a curvelet frequency ...a fast discrete curvelet transform [3], and solves the (F T L) problem to estimate these curvelet ...

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Toward fast transform learning

Toward fast transform learning

... Toward Fast Transform Learning Olivier Chabiron · François Malgouyres · Jean-Yves Tourneret · Nicolas Dobigeon Abstract This paper introduces a new dictionary learning strategy based on atoms obtained by ...

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Toward fast transform learning

Toward fast transform learning

... Toward Fast Transform Learning Olivier Chabiron · François Malgouyres · Jean-Yves Tourneret · Nicolas Dobigeon Abstract This paper introduces a new dictionary learning strategy based on atoms obtained by ...

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Learning a fast transform with a dictionary

Learning a fast transform with a dictionary

... iTWIST’14: international - Traveling Workshop on Interactions between Sparse models and Technology.. The K- SVD, an algorithm for designing overcomplete dictionar- ies for sparse represe[r] ...

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Learning a fast transform with a dictionary

Learning a fast transform with a dictionary

... 2 A sum of cosines of same frequency and different phases will yield a co- sine of unchanged frequency... The K- SVD, an algorithm for designing overcomplete dictionar- ies for sparse re[r] ...

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Adaptive hit or miss transform

Adaptive hit or miss transform

... distance transform is computed with the classical two-pass chamfering algorithm ...distance transform is propagated from − NMS(f ), the distance image is offset to all pos- itive ...

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Titchmarsh's theorem of Hankel transform

Titchmarsh's theorem of Hankel transform

... Hankel transform Hankel transform (or Fourier-Bessel transform) is a funda- mental tool in many areas of mathematics and engineering, in- cluding analysis, partial dierential equations, probability, ...

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Scalable and Accurate Subsequence Transform

Scalable and Accurate Subsequence Transform

... Subsequence Transform In time series classification, a shapelet is ideally a pattern that is shared by every instances of the same class, and that instances of other classes do not have, they are called ...

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Nonnegative Matrix Factorization With Transform Learning

Nonnegative Matrix Factorization With Transform Learning

... the transform underlying NMF- based signal decomposition jointly with the ...orthogonal transform Φ jointly with the dic- tionary W and the activation matrix ...a transform in the context of ...the ...

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A Bayesian grouplet transform

A Bayesian grouplet transform

... grouplet transform whose association field is calculated using the method in [ 23 ...a transform that generates coefficients with low autocorrelation level among which the most significant coefficients ...

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Chrestenson transform FPGA embedded factorizations

Chrestenson transform FPGA embedded factorizations

... Conclusion A formalism and an algorithm for the parallel implementation of the Chrestenson transform employing rotations of a general-base hypercube and their embedding into FPGA architectures has been presented. ...

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A fast Fourier transform micromechanical upscaling method for the study of the thermal expansion of a TATB-based pressed explosive

A fast Fourier transform micromechanical upscaling method for the study of the thermal expansion of a TATB-based pressed explosive

... 2 shows that the volumetric thermal ex- pansion coefficient increases dramatically above the glass transition temperature, suggesting that the binder plays a strong role on internal stre[r] ...

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Comparison theorem between Fourier transform and Fourier transform with compact support

Comparison theorem between Fourier transform and Fourier transform with compact support

... Résumé. Nous démontrons un théorème de comparaison entre la transformation de Fourier à support compact et la transformation de Fourier sans support, pour les D-modules arithmétiques. Abstract. We prove a comparison ...

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The Fourier transform of multiradial functions

The Fourier transform of multiradial functions

... Fourier transform of a radial function Φ(x) = φ(|x|) is given in terms of the one-dimensional Fourier transform of φ or the two-dimensional Fourier transform of (t, s) 7→ φ(|(t, ...Fourier ...

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The interaction transform for functions on lattices

The interaction transform for functions on lattices

... archive for the deposit and dissemination of sci- entific research documents, whether they are pub- lished or not. The documents may come from L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la ...

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Nonnegative Matrix Factorization With Transform Learning

Nonnegative Matrix Factorization With Transform Learning

... highly regular oscillations, further analyzed in the next paragraph. Properties of the learnt atoms. In Fig. 3, pairs of atoms (1, 2), (3, 6), (4, 5) (from left to right) for λ = 10 6 are plotted, together with the ...

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Riesz transform on graphs under subgaussian estimates

Riesz transform on graphs under subgaussian estimates

... It is the case, for example, of the Cayley graph of a discrete group with polynomial growth (see [21]). We define then ρ(x, y) = d 2 (x, y) and one can easily check that both (DV) and (UE) are verified. As a consequence, ...

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Multiaperture Fourier transform arrayed waveguide spectrometer

Multiaperture Fourier transform arrayed waveguide spectrometer

... to σ L +δσ, where δσ is the instrument resolution, results in one spatial fringe along the output ports as shown in Fig. 1b. The number of fringes further increases with the increasing wavenumber (Fig. 1c). For a ...

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On the Continuity of the Cramer Transform

On the Continuity of the Cramer Transform

... RSUT weak convergence is also metrizable in the subspace of tight -RISUT p measures [3], the bicontinuity of the Cramer transform p on F is equivalent to the sequential bicontinuity[r] ...

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