Dr. Ricardo Legarda Sáenz

         

Contact

 

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Facultad de Matemáticas, Laboratorio de Aprendizaje Automático y Visión, Edificio G

Tel. y Fax: (999) 942-31-40 al 49 ext. 1093

Curriculum vitae - download

Education and Awards

  •  Doctoral degree in Sciences (Optics), Centro de Investigaciones en Óptica. A. C. (Mexico), 2000.

Distinction for academic performance. Thesis work related with computational techniques for the moiré deflectometry technique:

a) simulation of geometrical propagation of light through an inhomogeneous medium using ray-tracing techniques, and

b) processing the experimental data generated by the technique.

  • Master degree in Electronic Engineering (Computation), Instituto Tecnológico de Chihuahua (Mexico), 1997. Special recognition for degree examination.

Thesis work related with character recognition using invariant moments as descriptors and neural networks as classifier.

  • Bachelor degree in Industrial Engineering (Electronic), Instituto Tecnológico de Chihuahua (Mexico), 1991.

Research interests and projects

My principal interest is the applications of optical shape measurement for the evaluation of complex objects. At present, I am working in the calibration and measurement of a fringe projection system, and the measured data matching from different views and/or different devices. A second interest is the processing of fringe patterns using inverse-problems approach.

Publications

  1. Jorge L. Flores, José A. Ferrari, G. GarcíaTorales, Ricardo Legarda-Saenz, Adriana Silva, ”Color-fringe pattern profilometry using a generalized phase-shifting algorithm,” Appl. Opt. 54, 8827-8834 (2015).

  2. Adonai Gonzalez, Mariano Rivera, Manuel Servin, Ricardo Legarda-Saenz, Oscar Dalmau, and Amalia Martinez, ”Synchronous phase demodulation algorithm for conic carrier Hartmann topographer,” Opt. Lasers Eng. 67, 157–162 (2015).

  3. J. L. Flores, R. Legarda-Saenz, and G. Garcia-Torales, ”Color deflectometry for phase retrieval using phase-shifting methods,” Opt. Commun. 334, 298–302 (2015).

  4. R. Legarda-Saenz, C. Brito-Loeza, and A. Espinosa-Romero, ”Total variation regularization cost function for demodulating phase discontinuities,” Appl. Opt. 53, 2297–2301 (2014).

  5. R. Legarda-Saenz, C. Brito-Loeza, M. Rivera, and A. Espinosa-Romero, ”Variational method for integrating radial gradient field,” Opt. Lasers Eng. 63, 53–57 (2014).

  6. A. Espinosa-Romero and R. Legarda-Saenz, ”GPU based real-time quadrature transform method for 3-D surface measurement and visualization,” Opt. Express 19, 12125–12130 (2011).

  7. R. Legarda-Saenz and A. Espinosa-Romero, ”Wavefront reconstruction using multiple directional derivatives and Fourier transform,” Opt. Eng. 50, 040501 (2011).

  8. R. Legarda-Saenz, R. Rodriguez-Vera, and A. Espinosa-Romero, ”Dynamic 3-D shape measurement method based on quadrature transform,” Opt. Express 18, 2639–2645 (2010).

  9. O. S. Dalmau-Cedeno, M. Rivera, and R. Legarda-Saenz, ”Fast phase recovery from a single closed-fringe pattern,” J. Opt. Soc. Am. A 25, 1361–1370 (2008).

  10. R. Legarda-Saenz, ”Robust wavefront estimation using multiple directional derivatives in moiré deflectometry,” Opt. Lasers Eng. 45, 915–921 (2007).

  11. R. Legarda-Saenz and M. Rivera, ”Fast half-quadratic regularized phase tracking for nonnormalized fringe patterns,” J. Opt. Soc. Am. A 23, 2724–2731 (2006).

  12. R. Legarda-Saenz, T. Bothe, and W. P. Juptner, ”Accurate procedure for the calibration of a structured light system,” Opt. Eng. 43, 464–471 (2004).

  13. R. Legarda-Saenz, W. Osten, and W. P. Juptner, ”Improvement of the regularized phase tracking technique for the processing of nonnormalized fringe patterns,” Appl. Opt. 41, 5519–5526 (2002).

  14. R. Legarda-Saenz, M. Rivera, and R. Rodriguez-Vera, ”Quadratic cost functional for wave-frontreconstruction,” Appl. Opt. 41, 1515–1521 (2002).

  15. R. Legarda-Saenz, M. Rivera, R. Rodriguez-Vera, and G. Trujillo-Schiaffino, ”Robust wave-front estimation from multiple directional derivatives,” Opt. Lett. 25, 1089–1091 (2000).

  16. R. Legarda-Saenz, R. Rodriguez-Vera, and M. Rivera, ”Nonparaxial method for computing the gradient field of a wavefront using moiré deflectometry,” Opt. Commun. 160, 214–218 (1999).

Conferences

  1. A. Silva, R. Legarda-Saenz, G. Garcia-Torales, S. Balderas-Mata, and J. L. Flores, ”3D shape measurement with binary phase-shifted technique and digital filters,” in Proceedings of SPIE, M. Strojnik Scholl and G. Páez, eds. (2014), Vol. 9219, p. 92190L.

  2. O. E. Castillo, R. Legarda, J. L. Flores, and G. Garcia-Torales, ”Measurement of phase objects by the use of color phase-shifting technique,” in Proceedings of SPIE, M. Strojnik Scholl and G. Páez, eds. (2013), Vol. 8867, p. 886710.

  3. B. Bravo-Medina, G. Garcia-Torales, R. Legarda-Sáenz, and J. L. Flores, ”Wavefront recovery Fourier-based algorithm in a vectorial shearing interferometer,” in Proceedings of SPIE, M. Strojnik Scholl and G. Páez, eds. (2013), Vol. 8867, p. 88670Z.

  4. A. Espinosa-Romero and R. Legarda-Saenz, ”Real-time parallel method for quadrature transform estimation and 3D surface measurement,” in Proceedings of SPIE (2011), Vol. 8011, p. 80117A.

  5. R. Legarda-Saenz, R. Rodriguez-Vera, and J. A. Rayas, ”Surface contouring of vibrating objects using quadrature transform,” in Fringe 2009. The 6th International Workshop on Advanced Optical Metrology (2009), pp. 455–460.

  6. R. Legarda-Saenz, ”Fast wavefront estimation using multiple directional derivatives and quadrature transform,” in Proceedings of SPIE (Spie, 2008), Vol. 7155, p. 715531.

  7. R. Legarda-Saenz, ”Robust wavefront reconstruction using multiple directional derivatives and computer monitor,” in Proceedings of SPIE (Spie, 2007), Vol. 6422, p. 64220W–1.

  8. R. Legarda-Sáenz, ”Tridimensional reconstruction using structured light systems,” in Proceedings of SPIE (Spie, 2006), Vol. 6046, p. 60461M.

  9. R. Legarda-Sáenz, R. Legarda-Sáenz, Mariano Rivera, ”New improvements of the regularized phase tracking technique for the processing of non-normalized fringe patterns,” in Proceedings of SPIE (Spie, 2005), Vol. 5776, p. 692.

  10. T. Bothe, A. Gesierich, R. Legarda-Saenz, and W. Juptner, ”Three-dimensional camera,” in Proceedings of SPIE (2003), Vol. 5144, p. 295.

  11. R. Legarda-Saenz, D. Kaiser, W. Osten,”Registration of two patches measured with different resolution in the optical measurement technique,” Technical Report BIAS-CIO. Junio 2001.

  12. R. Legarda-Sáenz, ”Processing multiple directional derivatives using quadrature transform,” XIX Annual Meeting of Optics / LIX National Congress of the Mexican Physical Society. San Luis Potosí, México. October 2006. J. A. Centeno, G. E. Gutiérrez-Valencia, R. Legarda-Sáenz,”Digitization of archaeological objects using photogrammetric techniques,” II Workshop on Image Processing and Optics (PIO2005). Guanajuato, Mexico. November 2005.

  13. L. A. Muñoz, A. Espinosa, R. Legarda Sáenz, F. Heredia, O. Santos, ”Computer Engineering: between constructivism and scientific research,” ANIEI XVII National Congress y III International Congress of Informatics and Computation. Nayarit, México. October 2004. (ISBN 970–36–0155–3).

  14. R. Legarda S., R. Rodriguez V., M. Servín G., ”Wavefront reconstruction using ray tracing,” III Ibero-American Meeting of Optics. Cartagena de Indias, Colombia. 1998. (ISBN 958–9205–32–1)

  15. R. Legarda S., M. I. Chacón M., ”Binarization of printed text,” Proceedings of XVII International Academic Congress of Electronic Engineering ELECTRO 95 (ISSN 1405–2172, Vol. XVII). Pag. 815 – 823.

  16. R. Legarda S., M. I. Chacón M., ”Group generation using K-means algorithm on the character recognition by neural networks,” Proceedings of XVII International Academic Congress of Electronic Engineering ELECTRO 95 (ISSN 1405–2172, Vol. XVII). Pag. 645 – 651.

  17. R. Legarda S., M. I. Chacón M., ”Performance and analysis study of MD1210 fuzzy sets comparator on pattern recognition,” Technical report 9 of the research project ”Electronic Aids for Visually Impaired.” Electrical and Electronic Department. Instituto Tecnológico de Chihuahua. November 1993.

  18. R. Legarda S., M. I. Chacón M., ”Performance study of intelligent device on pattern  recognition,” Proceedings of XIV National Congress of Electronic Engineering ELECTRO 92. Pag. 629 –636.

Completed Theses

  1. José Francisco Quintal Vázquez, Reconstrucción tridimensional de objetos estáticos basado en un sistema de proyección de patrones. Faculty of Mathematics, Universidad Autónoma de Yucatán. March 2016 (In Spanish).

  2. Adriana Silva Mejía, Reconstrucción 3D de objetos, empleando proyección de patrones binarios y algoritmos de corrimiento de fase. CUCEI, Universidad de Guadalajara. February 2015 (In Spanish).

  3. Oscar E. Castillo Serrano, Dynamic phase object visualization using parallel computing. CUCEI, Universidad de Guadalajara. February 2014 (In Spanish).

  4. Irving D. Sanchez Machay, Automatization of aerial capture system for mosaicing construction. Faculty of Mathematics, Universidad Autónoma de Yucatán. January 2014 (In Spanish).

  5. Xavier Sierra Canto, Homography estimation in aerial georeferenced images for mosaicing construction. Faculty of Mathematics, Universidad Autónoma de Yucatán. March 2012 (In Spanish).

  6. Iván May Cen, Integration of directional derivatives in module 2. Faculty of Mathematics, Universidad Autónoma de Yucatán. November 2009 (In Spanish).

  7. Alejandro Tellez Quiñones, Estimated parameters of the surfaces of a progressive ophthalmic lens using ray tracing. Faculty of Mathematics, Universidad Autónoma de Yucatán. December 2008 (In Spanish).

  8. Heidy Cecilia Escamilla Puc, Sensitivity analysis of radial fringe patterns to obtain a wavefront using a single image. Faculty of Mathematics, Universidad Autónoma de Yucatán. July 2008 (In Spanish).

  9. Karla Denaly Palma Alejandro Recovery of the topography of human skin in-vivo using fringe projection. Faculty of Engineering, Universidad Autónoma de Yucatán. March 2008 (In Spanish).

  10. Emmanuel A. Castillo Solis, Comparative study of segmentation techniques applied to images of the coastline of Yucatan. Faculty of Mathematics, Universidad Autónoma de Yucatán. September 2006 (In Spanish).