Raúl Andrés Castañeda Quintero

Raúl Andres Castañeda Quintero. B.S. in Physics Engineering and M.S. in Physics from the University of Colombia – Medellín. Ph.D. in Electrical and Computational Engineering from the University of Memphis, USA.  

During his academic training, Professor Raul has been interested in optics and digital processing, especially the focus on Holography and Digital Holographic Microscopy. During his master's and doctorate, Professor Raul specialized in hardware and software techniques to develop new strategies to improve digital holography systems. 

Regarding his professional experience, Professor Raul completed his doctoral studies at the Optical Imaging Research Laboratory of the University of Memphis with Professor Ana Doblas as supervisor. After his return to Colombia, Raul was the Leader of the Photonics, Optics, and Machine Learning laboratory at the Instituto Tecnologico Metropolitano. Professor Raul is an active member of the research group in Applied Optics at EAFIT University.  ​

• Digital Holography Microscopy
• Quantitative Phase Imaging
• Computational Science
• Image processing
  
  

• ​R. Castañeda, C. Trujillo, and A. Doblas, “pyDHM: A Python library for applications in digital holographic microscopy," PLoS ONE. 17(10). DOI: https://doi.org/10.1371/journal.pone.0275818 
• R. Castañeda, J. Garcia-Sucerquia, and A. Doblas, "Speckle noise reduction in coherent imaging systems via Hybrid Median-Mean Filter," Optical Engineering. 60(12) – 123107. DOI: https://doi.org/10.1117/1.OE.60.12.123107 
• R. Castañeda, C. Trujillo, and A. Doblas, “Video-Rate Quantitative Phase Imaging Using a Digital Holographic Microscope and a Generative Adversarial Network," Sensors, 2021, 21(23). DOI: https://doi.org/10.3390/s21238021 
• R. Castañeda, and A. Doblas, "Fast-iterative automatic reconstruction method for quantitative phase images without phase perturbations in off-axis digital holographic microscopy," Appl. Opt.  60, 10214-10220 (2021). DOI: https://doi.org/10.1364/AO.437640 
• C. Buitrago-Duque, R. Castañeda, and J. Garcia-Sucerquia, “Pointwise phasor tuning for singleshot speckle noise reduction in phase wave fields," Optics and Lasers in Engineering 137, 106365. DOI: https://doi.org/10.1016/j.optlaseng.2020.106365 
• R. Castañeda, C. Buitrago-Duque, J. Garcia-Sucerquia, and A. Doblas, "Fast-iterative blind phaseshifting digital holographic microscopy using two images," Appl. Opt. 59, 7469-7476 (2020). DOI: https://doi.org/10.1364/AO.398352 
• C. Buitrago-Duque, R. Castañeda, and J. Garcia-Sucerquia, "Single-shot pseudo-stochastic speckle noise reduction in numerical complex-valued wavefields," Optical Engineering 59(7), 073107 (2020). DOI: https://doi.org/10.1117/1.OE.59.7.073107 
• R. Castañeda and J. Garcia-Sucerquia, "Single-shot 3D topography of reflective samples with digital holographic microscopy," Appl. Opt. 57, A12-A18 (2018). DOI: https://doi.org/10.1364/AO.57.000A12 
• R. Castañeda, D. Hincapie, and J. Garcia-Sucerquia, "Experimental study of the effects of the ratio of intensities of the reference and object waves on the performance of off-axis digital holography," Opt. - Int. J. Light Electron Opt. 132, 274–283 (2017). DOI: https://doi.org/10.1016/j.ijleo.2016.12.062 
• C. Trujillo, R. Castañeda, P. Piedrahita-Quintero, and J. Garcia-Sucerquia, "Automatic full compensation of quantitative phase imaging in off-axis digital holographic microscopy," Appl. Opt. 55, 10299–10306 (2016). DOI: https://doi.org/10.1364/AO.55.010299 
• R. Castañeda, D. Hincapie, and J. Garcia-Sucerquia, "Estudio experimental de los efectos del filtrado espacial en holografía digital fuera de eje operando fuera o dentro en el límite de difracción," Opt. Pura y Apl. 50, 93–102 (2017). DOI: https://doi.org/10.7149/OPA.50.1.49016  
• R. Castañeda and J. Garcia-sucerquia, "Application of basic optics principles for the determination of effective limits of numerical diffraction methods," Ingenieria y competitividad, 182, 175–182 (2016). 
• R. Castañeda, D. Hincapie, S. Bedoya, J. Herrera-Ramírez, and J. García-Sucerquia, "Estudio del efecto de la relación de intensidades relativas entre la onda de referencia y la onda objeto en holografía digital," Rev. la Acad. Colomb. Ciencias Exactas, Físicas y Nat. 39, 29 (2015). DOI: https://doi.org/10.18257/raccefyn.258
• ​R. Castañeda, W. Toro, and J. Garcia-Sucerquia, "Evaluation of the limits of application for numerical diffraction methods based on basic optics concepts," Optik. 126, 5963–5970 (2015). DOI: https://doi.org/10.1016/j.ijleo.2015.08.109 
• P. Piedrahita-Quintero, R. Castañeda, and J. Garcia-Sucerquia, "Numerical wave propagation in ImageJ," Appl. Opt. 54, 6410–6415 (2015). DOI: https://doi.org/10.1364/AO.54.006410  
• R. Castañeda, P. Piedrahita-Quintero, and J. Garcia-Sucerquia, "Image processing and computing for digital holography with ImageJ," Óptica Pura y Apl. 48, 77–84 (2015). DOI: 10.7149/OPA.48.2.7 

Conferences

• SPIE BiOS: Quantitative Phase Imaging IX. R. Castaneda, C. Trujillo, and A Doblas, “Concurrent execution of phase compensation and automatic focusing procedures for telecentric off-axis digital holographic microscopy." March 2023.
• IEEE Photonics Conference. R. Castaneda, C. Trujillo, and A Doblas, “Learning-based method for full phase reconstruction of biological samples in digital holographic microscopy." 18–21 October 2021, virtual
• Digital Holography and Three-Dimensional Imaging, Imaging and Applied Optics  Congress. R. Castaneda, Jorge Garcia-Sucerquia, and A. Doblas, “Synergetic combination of median filtered images to reduce speckle noise in digital holography (DH) and digital holographic microscopy (DHM)." 19–23 July 2021, virtual conference, Washington, DC, United States.
• 3D Image Acquisition and Display: Technology, Perception and Applications, Imaging and Applied Optics Congress, R. Castaneda, A. Doblas, “Joint Reconstruction Strategy for Telecentric-based Digital Holographic Microscopes." 19–23 July 2021, virtual conference, Washington, DC, United States.
• Three-Dimensional Imaging, Visualization, and Display 2020. R. Castaneda, T O'Connor, A. Doblas, B. Javidi, “Reduction in data acquisition for resolution improvement in structured illumination digital holographic microscopy," California, United States (Online Only).
• Digital Holography and Three-Dimensional Imaging 2020. R. Castaneda, C. Buitrago-Duque, Jorge GarciaSucerquia, Aaron Robinson, A. Doblas “Fast-iterative blind reconstruction algorithms for accurate quantitative phase images in phase-shifting digital holographic microscopy," Washington DC (USA), June 2020.
• Digital Holography and Three-Dimensional Imaging 2019. C. Buitrago, R. Castañeda and Jorge GarciaSucerquia, “Denoising Phase Maps of Digital Holographic Microscopy by Complex Tuning", Bordeaux (France), May 2019.
• Digital Holography and Three-Dimensional Imaging. C. Trujillo, P. Piedrahita-Quintero, R. Castañeda and Jorge Garcia-Sucerquia, “Full compensation of quantitative phase images of digital holographic microscopy using GPU," Orlando (USA), June 2018.
• Three-Dimensional Imaging, Visualization, and Display, Jorge Garcia-Sucerquia and Raul Castañeda, “3D topography of reflective samples by single-shot digital holographic microscopy (conference presentation)," Orlando-Florida (USA), May 2018.
• IONS – Bogotá. R. Castañeda and Jorge Garcia-Sucerquia, “3D – Topography Profile of Microscopic Structures Using Quantitative Phase Imaging Techniques in DHM," Bogotá (Colombia), August 2017.
• IONS – Bogotá. C. Trujillo, P. Piedrahita-Quintero, Raul Andrés Castaneda and Jorge Garcia-Sucerquia, “Algorithm for full compensation of quantitative phase images in off-axis digital holographic microscopy," Bogotá (Colombia), August 2017.
• III international conference on applications of Optics and photonics AOP 2017. Jorge Herrera-Ramirez, Diego Hincapie, Nelson Correa, R. Castañeda, Jefry Gaviria, Mikel Aldaba, “Evaluating Polarization Diversity for Speckle Reduction in Retinal Image Quality Estimates.", Faro (Portugal), Mayo 2017.
• World Earth Day in the exploratory of Medellin. R. Castaneda "What's in the air?", Medellin (Colombia), April 2017.
• RIAO/OPTILAS. R. Castañeda, Diego Hincapie, and Jorge García-Sucerquia, “3D – Profile of microscopic structures using quantitative phase imaging technique in digital holographic microscopy", Pucon (Chile), November 2016.
• XIV National Meeting of optics and V Andean and Caribbean conference in optics and its application ENOCANCOA. R. Castañeda, W. Toro and Jorge García-Sucerquia, “Evaluation of the limits of applications for numerical diffraction methods based on basic Optics concepts", Calí (Colombia), November 2015.
• XXVI National congress of physics. P. Piedrahita-Quintero, R. Castañeda and Jorge Garcia-Sucerquia, “Numerical wave propagation for ImageJ", Manizales (Colombia), October 2015.
• XXVI National congress of physics. P. Piedrahita-Quintero, R. Castañeda, Diego Hincapie and Jorge GarciaSucerquia, “Study of the effect of the ratio of relative intensities between the reference wave and the object wave in digital holography", Manizales (Colombia), October 2015.
• XVII Giambiagi Winter School, Light and light based technologies. P. Piedrahita-Quintero, R. Castañeda and Jorge García-Sucerquia, "Numerical wave propagation plugin for ImageJ", Buenos Aires (Argentina), August 2015.
• FOCUS 2014. Nazly Roció-Hincapié, R. Castañeda and Jorge Garcia-Sucerquia, “Algorithm to calculate the displacement a sequence of images by pattern recognition", Medellín (Colombia), November 2014.
• Optics and Photonics 2014. R. Castañeda and Jorge García-Sucerquia, “Numerical reconstruction of digital holograms with ImageJ", San Diego-California (USA), August 2014.
• XIII National Meeting of optics and V Andean and Caribbean conference in optics and its application ENOCANCOA. R. Castañeda and Jorge García-Sucerquia, “Range of validity of numerical methods of propagation of optical fields by means of the BABINET principle and the number of Fresnel zones", Medellín (Colombia), September 2012.
• XIII National Meeting of optics and V Andean and Caribbean conference in optics and its application ENO-CANCOA. R. Castañeda and Jorge García-Sucerquia, “Numerical reconstruction of holograms digital in the free distribution software ImageJ", Medellín (Colombia), November 2012.
• III National Congress of Physics Engineer. R. Castañeda and Jorge García-Sucerquia, “Custom image processing in the free distribution software ImageJ", Medellín (Colombia), November 2012.

Awards & honors 

• ​The manuscript entitled “Fast-iterative automatic reconstruction method for quantitative phase image with reduced phase perturbations in off-axis digital holographic microscopy" published in Applied Optics was highlighted as an Editor's Pick. 
• Graduate Assistantship – University of Memphis 2019. 
• The manuscript entitled “Single-shot 3D topography of reflective samples with digital holographic microscopy" published in Applied Optics was one of the most downloaded articles in January 2018. 
• Teacher guide, tecnológico de Antioquia, 2018. 
• Magna Cum Laude (Master's Thesis), 2017. 
• Young researchers fellowship, Minciencias, 2015. 
• Travel grant for SPIE Optics and photonics 2014 San Diego - California, USA