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Listar *Documentos Académicos*-- UA Ingeniería Eléctrica por autor "20608"

Listar *Documentos Académicos*-- UA Ingeniería Eléctrica por autor "20608"

Ordenar por:Orden:Resultados:

  • Análisis temporal de imágenes de franjas en técnicas ópticas de medición 
    Villa Hernández, José de Jesús; Gómez Pédrero, José; Quiroga Mellado, Juan Alberto (Universidad Autónoma de Zacatecas, 2004-03-05)
    El análisis de imágenes franjas, que es de fundamental importancia en una gran cantidad de métodos ópticos de medición, en muchas ocasiones puede presentar dificultades como puede ser la presencia de altos niveles de ruido, ...
  • Automatic techniques for evaluation of moire deflectograms 
    Quiroga Mellado, Juan Antonio; Villa Hernández, José de Jesús; Crespo, Daniel (SPIE--The International Society for Optical Engineering., 2013-10)
    In this work we present two methods for the analysis of moire deflectograms. The first method is a Fourier-transform technique. The second method uses a regularization based method. Both methods are applied to realistic ...
  • Chlorophyll fluorescence emission of tomato plants as a response to pulsed light based LEDs 
    Olvera González, Ernesto; Alaniz Lumbreras, Daniel; Ivanov, Rumen; Villa Hernández, José de Jesús; De la Rosa Vargas, José Ismael; Lépez Cruz, Irineo; Silos Espino, Héctor; Lara Herrera, Alfredo (Springer, 2013)
    The effects of pulsed light based-LEDs at eleven frequencies (0.1, 1, 10, 50, 100, 500 Hz, 1, 5, 10, 50 and 100 kHz) programmed at 50 % duty cycle were analyzed, obtaining important parameters of the fluorescence emission ...
  • Foucault test: shadowgram modeling from the physical theory for quantitative evaluations 
    Villa Hernández, José de Jesús; Rodríguez, Gustavo; De la Rosa Vargas, José Ismael; Ivanov, Rumen; Saucedo Anaya, Tonatiuh; González Ramírez, Efrén (OSA Publishing, 2014-12)
    The physical theory of the Foucault test has been investigated to represent the complex amplitude and irradiance of the shadowgram in terms of the wavefront error; however, most of the studies have limited the treatment ...
  • Improved regularized phase-tracking technique for the processing of squared-grating deflectograms 
    Villa Hernández, José de Jesús; Quiroga Mellado, Juan Antonio; Servin Guirado, Manuel (OSA Publishing, 2000-02)
    We propose a robust procedure based on the regularized phase-tracking (RPT) technique to demodulate squared-grating deflectograms. The use of squared gratings, already reported, lets us multiplex the information of the ...
  • Phase unwrapping using a regular mesh grid 
    Berriel Valdos, Luis Raúl; Olvera Olvera, Carlos Alberto; Arceo Olague, José Guadalupe; De la Rosa Miranda, Enrique; González Ramírez, Efrén; Saucedo Anaya, Tonatiuh; Villa Hernández, José de Jesús; De la Rosa Vargas, José Ismael (Universities of Vigo and Santiago de Compostela, 2014)
    Phase unwrapping is a key step in the fringe pattern analysis. Although there are many algorithms for recovering continuous phase from wrapped phase maps, many of them are computationaly heavy, even for smooth phase maps. ...
  • Phase Unwrapping using Chebyshev Polynomials 
    De la Rosa Miranda, Enrique; González Ramírez, Efrén; Arceo Olague, José Guadalupe; Villa Hernández, José de Jesús; De la Rosa Vargas, José Ismael; Saucedo Anaya, Tonatiuh; Berriel Valdos, Luis Raúl; Escalante, Nivia (SPIE- The International Society for Optical Engineering, 2013-11-18)
    Phase unwrapping is an intermediate step for interferogram analysis. The phase associated with an interferogram can be estimated using a curve mesh of functions. Each of these functions can be approximated by a linear ...
  • Profilometry for the measurement of 3-D object shapes based on regularized filters 
    Villa Hernández, José de Jesús; Servin Guirado, Manuel; Castillo, L. (Elsevier, 1999-03-01)
    Regularized filters RFs. are used in profilometry for the measurement of three-dimensional object shapes. A linear grating pattern projected onto an object is phase-modulated by the 3-D shape. Phase information of the ...
  • Regularized quadratic cost function for oriented fringe-pattern filtering 
    Villa Hernández, José de Jesús; Quiroga Mellado, Juan Antonio; De la Rosa Vargas, José Ismael (OSA Publishing, 2009-06-01)
    We use the regularization theory in a Bayesian framework to derive a quadratic cost function for denoising fringe patterns. As prior constraints for the regularization problem, we propose a Markov random field model that ...
  • Robust profilometer for the measurement of 3-D object shapes based on a regularized phase tracker 
    Villa Hernández, José de Jesús; Servin Guirado, Manuel (Elsevier, 1999-07)
    A robust pro"lometer is proposed to measure 3-D object shapes based on a regularized phase tracker that is capable of demodulating fringe patterns with a high noise presence and broad bandwidth due to the object shape. ...
  • Synchronous detection technique for temporal fringe pattern analysis 
    Villa Hernández, José de Jesús; Gómez Pédrero, José Antonio; Quiroga Mellado, Juan Antonio (Elsevier, 2002-04-01)
    An alternative method for temporal evaluation of fringe patterns is proposed. The method is based on the application of a synchronous detection system for processing the temporal irradiance fluctuations generated when the ...
  • Wavefront recovery in shearing interferometry with variable magnitude and direction shear 
    Villa Hernández, José de Jesús; García, G.; Gómez, G. (Elsevier, 2001-08)
    We propose a regularization method for estimating the wavefront from shearing interferometric patterns generated in vectorial shearing interferometry. The method considers shearing patterns with variable magnitude and ...

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