Results 71 to 80 of about 489,037 (244)
Broadband Generalized Sidelobe Canceler Beamforming Applied to Ultrasonic Imaging
Applied Sciences, 2020 A broadband generalized sidelobe canceler (Broadband-GSC) application for near-field beamforming is proposed. This approach is implemented in the wavelet domain.
Jiake Li +6 more
doaj +1 more source
Applied SciencesWavelet transform is a powerful time-frequency-based analysis method often used in gear fault diagnostics. The development of wavelet transform is closely linked to the improvement of resolution.
Trong-Du Nguyen, Phong-Dien Nguyen
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An Algorithm for the Continuous Morlet Wavelet Transform
, 2007 This article consists of a brief discussion of the energy density over time or frequency that is obtained with the wavelet transform. Also an efficient algorithm is suggested to calculate the continuous transform with the Morlet wavelet.
Caprioli +22 more
core +1 more source
Irreducible wavelet representations and ergodic automorphisms on solenoids
, 2010 We focus on the irreducibility of wavelet representations. We present some connections between the following notions: covariant wavelet representations, ergodic shifts on solenoids, fixed points of transfer (Ruelle) operators and solutions of refinement ...
Dutkay, Dorin Ervin +2 more
core +1 more source
NEW METHOD FOR HAND GESTURE RECOGNITION USING WAVELET NEURAL NETWORK
Journal of Engineering and Sustainable Development, 2017 This paper present a method for hand gesture recognition through Statistic hand gesture which is namely, a subset of American Sign Language (ASL). The proposed technique presents an image of hand gesture by passing it through four stages, preprocessing,
Jabbar Raheem Rashed +1 more
doaj
UVB solar radiation climatology for Mexico
Geofísica Internacional, 2013 La medición de la radiación solar ultravioleta B de banda (UVB) debe considerarse como una prioridad debido a las implicaciones de este tipo de radiación en la salud pública en todo el país (población nacional total, 108 millones), pero esto no se lleva ...
Mauro Valdés-Barrón +5 more
doaj +1 more source
Coxeter Groups and Wavelet Sets
, 2007 A traditional wavelet is a special case of a vector in a separable Hilbert space that generates a basis under the action of a system of unitary operators defined in terms of translation and dilation operations.
Larson, David, Massopust, Peter
core +3 more sources
Singularity and similarity detection for signals using the wavelet transform [PDF]
, 2005 The wavelet transform and related techniques are used to analyze singular and fractal signals. The normalized wavelet scalogram is introduced to detect singularities including jumps, cusps and other sharply changing points. The wavelet auto-covariance is
Billings, S.A., Wei, H.L.
core
Stack-run adaptive wavelet image compression [PDF]
, 2003 We report on the development of an adaptive wavelet image coder based on stack-run representation of the quantized coefficients. The coder works by selecting an optimal wavelet packet basis for the given image and encoding the quantization indices for ...
Awan, A. Majid +2 more
core
EKSTRAKSI FITUR BERBASIS AVERAGE FACE UNTUK PENGENALAN EKSPRESI WAJAH
Jurnal Ilmiah Informatika, 2017 In recent years it appears interest in the interaction between humans and computers. Facial expressions play a fundamental role in social interaction with other humans.
Jarot Dwi Prasetyo +2 more
doaj +1 more source