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Projeto de bancos de filtros wavelet quase-ortogonais simétricos e de suporte compacto baseado no processo de ortogonalização wavelet
(Universidade Estadual Paulista (Unesp), 2021-02-09)
A análise wavelet baseada em um banco de filtros de dois canais tem sido usada com frequência em várias aplicações. O algoritmo utilizado para tal propósito é a transformada wavelet rápida, que permite obter os coeficientes ...
Experimental evaluation of a 3D wavelet-based phase recovery method in temporal speckle pattern interferometry
(Optical Society of America, 2017-05)
We test the performance of a phase recovery method based on a three-dimensional directional wavelet transform applied to the intensity signal measured by temporal speckle pattern interferometry (TSPI). We present and discuss ...
Automatic well tying and wavelet phase estimation with no waveform stretching or squeezing
(Society of Exploration Geophysicists, 2020-02)
Well-to-seismic tie and wavelet phase estimation are close and related steps to link geology and seismic data. Usually these processes are solved separately or alternately, diminishing the quality of the well tying procedure. ...
A note on directional wavelet transform: distributional boundary values and analytic wavefront sets
(International Journal of Mathematics and Mathematical Sciences, 2018)
Harmonics filtering and detection of disturbances using wavelets
(1999-12-01)
Traditional mathematical tools, like Fourier Analysis, have proven to be efficient when analyzing steady-state distortions; however, the growing utilization of electronically controlled loads and the generation of a new ...
Dual-tree complex wavelet transform applied to fault monitoring and identification in aeronautical structures
(2014-01-01)
This paper proposes the application of the dual-tree complex wavelet transform on fault monitoring and identification in aeronautical structures. For this purpose, a multiscale analysis from phase of the complex wavelet ...
Measurement of in-plane displacements using the phase singularities generated by directional wavelet transforms of speckle pattern images
(Optical Society of America, 2013-03)
We present a method to determine micro and nano in-plane displacements based on the phase singularities generated by application of directional wavelet transforms to speckle pattern images. The spatial distribution of the ...
APPLICATIONS OF WAVELETS IN INDUCTION MACHINE FAULT DETECTION
(Universidad de Tarapacá., 2010)
Robust phase recovery in temporal speckle pattern interferometry using a 3D directional wavelet transform
(Optical Society of America, 2009-08)
We propose an approach based on a 3D directional wavelet transform to retrieve optical phase distributions in temporal speckle pattern interferometry. We show that this approach can effectively recover phase distributions ...