Dr. John Fredy Barrera Ramírez
Professor at Univ de Antioquía
SPIE Involvement:
Area of Expertise:
optical information processing , optical encryption , optical pattern recognition , diffractive optics , holography
Profile Summary

He received his BSc, MSc, and PhD degrees in physics from Antioquia University (Medellín, Colombia) in 2001, 2003, and 2007, respectively. His Doctoral Thesis received the academic distinction of “Summa Cum Laude”. Since 2006 he has been with Antioquia University, where he is Professor in the Physics Institute and coordinator of the Optics and Photonic’s Group. He received the international award “ICO/ICTP GALLIENO DENARDO AWARD” given by the International Commission for Optics (ICO) and the International Centre for Theoretical Physics (ICTP) (Trieste-Italia), he has been selected as “Future Leader” in the Science and Technology in Society (STS) Forum, “Young TWAS Affiliate” of the World Academy of Sciences (TWAS), “Junior Associate” of the International Centre for Theoretical Physics (ICTP), “one out of 30 scientists under 40 years old that are doing promising research” according the scientific platform “Latinamerica Science” and he was invited researcher in the frame of the program “Research Stays for Renowned Researchers”, Universidad Politécnica de Valencia (Valencia, Spain). John Fredy Barrera Ramírez was designated “OSA Senior Member” of the Optical Society (OSA) and member of the Editorial Board of the Heliyon’s Elsevier Journal, also he is member of the International Society for Optics and Photonics (SPIE) and the TWAS Young Affiliates Network (TYAN).
Some contributions by John Fredy Barrera Ramírez and his collaborators have been selected to be included and highlighted in exclusive sections of journals and prestigious scientific platforms such as the “Research Highlights” section of Nature Photonics, twice in the exclusive section “IOPselect” of IOP Science, the special section “Spotlight on Optics” of Optical Society (OSA), twice in the collection “Highlights” and in the section “LabTalk” of Journal of Optics, 25 occasions in the “Top Downloaded Articles” from OSA Journals, the “TWAS Annual Report”, and in “Roadmap on optical security” of Journal of Optics
Publications (9)

PROCEEDINGS ARTICLE | November 3, 2011
Proc. SPIE. 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World
KEYWORDS: Modulation, Speckle, Data storage, Image processing, Video, Fourier transforms, Phase shift keying, Multiplexing, Computer programming, Lanthanum

PROCEEDINGS ARTICLE | November 3, 2011
Proc. SPIE. 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World
KEYWORDS: Mirrors, Beam splitters, Holograms, Optical signal processing, Fourier transforms, Multiplexing, CCD cameras, Spatial light modulators, Data processing, Lanthanum

SPIE Journal Paper | February 1, 2009
OE Vol. 48 Issue 02
KEYWORDS: Image encryption, Diffusers, Multiplexing, Digital holography, Image restoration, Optical correlators, Joint transforms, Computer security, Computer simulations, Fourier transforms

PROCEEDINGS ARTICLE | December 6, 2006
Proc. SPIE. 5945, 14th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics
KEYWORDS: Superposition, Diffraction, Optical filters, Imaging systems, Image processing, Numerical simulations, Image quality, Image filtering, Transmittance, Neodymium

PROCEEDINGS ARTICLE | September 24, 2005
Proc. SPIE. 5954, Optical Security Systems
KEYWORDS: Superposition, Optical filters, Image encryption, Image processing, Numerical simulations, Computer programming, Near field diffraction, Transmittance, Image retrieval, Fiber optic illuminators

PROCEEDINGS ARTICLE | October 21, 2004
Proc. SPIE. 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
KEYWORDS: Image encryption, Image processing, Image restoration, Computing systems, Fourier transforms, Computer programming, Computer simulations, Zone plates, Lanthanum, Computer security

Showing 5 of 9 publications
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