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Envíos recientes

Maestría en Ciencias del Procesamiento de la Información: Envíos recientes

  • A comparative case study of neural network training by using frame-level cost functions for automatic speech recognition purposes in Spanish 
    Becerra, Aldonso; De la Rosa Vargas, José Ismael; González Ramírez, Efrén; Pedroza, David; Escalante, Iracemi; Santos, Eduardo (Springer, 2020-03)
    Training procedures of a deep neural network are still an area with ample research possibilities and constant improvement either to increase its efficiency or its time performance. One of the lesser-addressed components ...
  • Fringe pattern denoising using spatial oriented gaussian filters 
    Villa Hernández, José de Jesús; González Ramírez, Efrén; Moreon, Gamaliel; De la Rosa Vargas, José Ismael; Flores, Jorge Luís; Alaniz Lumbreras, Daniel (Elsevier, 2020-02)
    In this paper, it is proposed a gaussian convolution-based fringe pattern denoising method. As will be shown, this method is robust enough compared with some of the most outstanding methods in the literature. Additionally, ...
  • Limited-data automatic speaker verification algorithm using band-limited phase-only correlation function 
    Pedroza Ramírez, Angel David; De la Rosa Vargas, José Ismael; Villa Hernández, José de Jesús; Becerra Sánchez, Aldonso (TUBITAK, 2019-07)
    In this paper, a new method to deal with automatic speaker verification based on band-limited phaseonly correlation (BLPOC) is proposed. The aim of this study is to validate the use of the BLPOC function as a new limited-data ...
  • Analysis of a multiclass classification problem by Lasso Logistic Regression and Singular Value Decomposition to identify sound patterns in queenless bee colonies 
    Robles Guerrero, Antonio; Saucedo Anaya, Tonatiuh; González Ramírez, Efrén; De la Rosa Vargas, José Ismael (Elsevier, 2019-04)
    This study presents an analysis of a multiclass classification problem to identify queenless states by monitoring bee sound in two possible cases; a strong and healthy colony that lost its queen and a reduced population ...
  • Bironchigram processing method for quantitative evaluation of optical focusing mirrors 
    Rodríguez, Gustavo; Villa Hernández, José de Jesús; Ivanov, Rumen; De la Rosa Vargas, José Ismael (Elsevier, 2019-02)
    Since its proposal the Ronchi “ruling ”test has been considered as the most remarkable technique of the Schlieren family. Despite being based on fringe pattern generation and commonly interpreted in a qualitative way, it ...
  • Training deep neural networks with non-uniform frame-level cost function for automatic speech recognition 
    Becerra, Aldonso; De la Rosa Vargas, José Ismael; González Ramírez, Efrén; Pedroza, David; Escalante, N. Iracemi (Springer, 2018-10)
    The aim of this paper is to exhibit two new variations of the frame-level cost function for training a deep neural network in order to achieve better word error rates in speech recognition. Optimization methods and their ...
  • Speech recognition in a dialog system: from conventional to deep processing A case study applied to Spanish 
    Becerra, Aldonso; De la Rosa Vargas, José Ismael; González Ramírez, Efrén (Springer, 2018-08)
    The aim of this paper is to illustrate an overview of the automatic speech recognition (ASR) module in a spoken dialog system and how it has evolved from the conventional GMM-HMM (Gaussian mixture model - hidden Markov ...
  • On the comparison of different Kernel functionals and neighborhood geometry for Nonlocal Means filtering 
    De la Rosa Vargas, José Ismael; Villa Hernández, José de Jesús; Cortez, Joaquín; Gamboa Rosales, Hamurabi; Arceo Olague, José Guadalupe; González Ramírez, Efrén (Springer, 2018-01)
    The present work proposes a review and comparison of different Kernel functionals and neighborhood geometry for Nonlocal Means (NLM) in the task of digital image filtering. Some different alternatives to change the classical ...
  • Multi-factor authentication model based on multipurpose speech watermarking and online speaker recognition 
    Nematollahi, Mohammad Ali; Gamboa Rosales, Hamurabi; Martínez Ruíz, Francisco Javier; De la Rosa Vargas, José Ismael; R. Al-Haddad, S.A.; Esmaeilpour, Mansour (Springer, 2017-03)
    In this paper, a Multi-Factor Authentication (MFA) method is developed by a combination of Personal Identification Number (PIN), One Time Password (OTP), and speaker biometric through the speech watermarks. For this reason, ...
  • Demodulation of single interferograms using a sliding 2-D continuous wavelet transform method 
    Villa Hernández, José de Jesús; De la Rosa Vargas, José Ismael; Ivanov, Rumen; Alaniz Lumbreras, Daniel; González Ramírez, Efrén (Taylor and Francis, 2015-01)
    In this paper, we present an alternative technique for the demodulation of single interferograms using a sliding 2-D continuous wavelet transform (2-D CWT) method. The sliding strategy proposed in this work is used with ...
  • An alternative method for phase-unwrapping of interferometric data 
    De la Rosa Miranda, Enrique; González Ramírez, Efrén; Villa Hernández, José de Jesús; Berriel Valdos, Luis Raúl; Olvera Olvera, Carlos Alberto; De la Rosa Vargas, José Ismael; Saucedo Anaya, Tonatiuh; Arceo Olague, José Guadalupe (European Optical Society, 2014-09)
    In this paper we present a novel algorithm for phase unwrapping where only a subset of data from the wrapped phase map is used to reconstruct the unwrapped phase map as a linear combination of radial basis functions (RBF’s). ...
  • MAP entropy estimation: Applications in robust image filtering 
    De la Rosa Vargas, José Ismael; Villa Hernández, José de Jesús; De la Rosa Miranda, Enrique; González Ramírez, Efrén; Gutierrez, Osvaldo; Escalante, Nivia; Ivanov, Rumen; Fleury, Gilles (European Optical Society, 2013-07)
    We introduce a new approach for image filtering in a Bayesian framework. In this case the probability density function (pdf) of the likelihood function is approximated using the concept of non-parametric or kernel estimation. ...
  • Efficient numerical analysis of optical imaging data: A comparative study 
    Duarte Correa, David; Pastrana Palma, Alberto; Olvera Olvera, Carlos Alberto; Ramírez Rodríguez, Sergio; Alaniz Lumbreras, Daniel; Gómez Meléndez, Domingo; De la Rosa Vargas, José Ismael; Noriega, Salvador; Torres, Vianey; Castaño, Víctor (Elsevier, 2013-11)
    The computational efficiency of 14 optical detectors over six types of transformations, namely: blur, illumination, rotation, viewpoint, zoom, and zoom-rotation changes, was analyzed. Images with the same resolution (750×500 ...
  • Semi-Huber Half Quadratic Function and Comparative Study of Some MRFs for Bayesian Image Restoration 
    De la Rosa Vargas, José Ismael; Villa Hernández, José de Jesús; González Ramírez, Efrén; De la Rosa Miranda, Enrique; Gutiérrez, Osvaldo; Olvera Olvera, Carlos Alberto; Castañeda Miranda, Rodrígo; Fleury, Gilles (European Optical SocietySpringer, 2013-10)
    The present work introduces an alternative method to deal with digital image restoration into a Bayesian framework, particularly, the use of a new half-quadratic function is proposed which performance is satisfactory ...
  • Absolute measurements of thermal effusivity using the electropyroelectric technique 
    Ivanov, Rumen; Martínez Ordoñez, E. I.; Marín, Ernesto; Araujo Andrade, Cuauhtémoc; Alaniz Lumbreras, Daniel; Araiza Esquivel, María Auxiliadora; Villa Hernández, José de Jesús; De la Rosa Vargas, José Ismael (Elsevier, 2013-02)
    The so-called electropyroelectric technique uses amplitude modulated electrical current as excitation source of thermal waves in a pyroelectric sensor in contact with a liquid sample. Here it is showed that this technique ...
  • 2-D Continuous Wavelet transform for ESPI phase-maps denoising 
    Escalante, Nivia; Villa Hernández, José de Jesús; De la Rosa Vargas, José Ismael; De la Rosa Miranda, Enrique; González Ramírez, Efrén; Gutiérrez, Osvaldo; Olvera Olvera, Carlos Alberto; Araiza Esquivel, María Auxiliadora (Elsevier, 2013-04)
    In thiswork we introduce a 2-D Continuous Wavelet Transform (2D CWT) method for denoising ESPI phase-maps. Multiresolution analysis with 2-D wavelets can provide high directional sensitivity and high anisotropy which are ...
  • Chlorophyll fluorescence emission as a response of pulsed light based-leds in tomato plants 
    Olvera González, Ernesto; Alaniz Lumbreras, Daniel; Ivanov, Rumen; Villa Hernández, José de Jesús; De la Rosa Vargas, José Ismael; López Cruz, Irineo; Silos Espino, Héctor; Lara Herrera, Alfredo (Springer, 2013-02)
    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 ...
  • Semi-Huber potential function for image segmentation 
    Gutiérrez, Osvaldo; De la Rosa Vargas, José Ismael; Villa Hernández, José de Jesús; González Ramírez, Efrén; Escalante, Nivia (Osa Publishing, 2012-03)
    In this work, a novel model of Markov Random Field (MRF) is introduced. Such a model is based on a proposed Semi-Huber potential function and it is applied successfully to image segmentation in presence of noise. The main ...
  • A Statistical Inference Comparison for Measurement Estimation Using Stochastic Simulation Techniques 
    De la Rosa Vargas, José Ismael; Miramontes de León, Gerardo (IEEE Instrumentation and Measurement Society, 2008-10)
    The purpose of this paper is to present a comparison of different techniques for making statistical inference about a measurement system model. This comparison involves results when two main assumptions are made: 1) the ...
  • Radial basis functions for phase unwrapping 
    Villa Hernández, José de Jesús; De la Rosa Vargas, José Ismael; De la Rosa Miranda, Enrique (Instituto Politécnico NacionalUniversidad Nacional Autónoma de México, 2010-03)
    Un importante paso en el análisis de patrones de franjas es el llamado desenvolvimiento de fase. Aunque esta tarea puede ser realizada fácilmente usando algoritmos dependientes del camino, muchas veces, sin embargo, estos ...

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