John F. Barrera-Fredy

Medellin, ANT, Colombia

Last Updated: 09/26/2026

Save publications for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Found 11 publications

Experimental optical encryption of grayscale information.

Experimental optical encryption of grayscale information.

Journal: Applied optics
Published: October 20, 2017

Compensation of Presbyopia With the Light Sword Lens.

Compensation of Presbyopia With the Light Sword Lens.

Journal: Investigative ophthalmology & visual science
Published: December 22, 2016

Experimental scrambling and noise reduction applied to the optical encryption of QR codes.

Experimental scrambling and noise reduction applied to the optical encryption of QR codes.

Journal: Optics express
Published: October 17, 2014

Experimental QR code optical encryption: noise-free data recovering.

Experimental QR code optical encryption: noise-free data recovering.

Journal: Optics letters
Published: July 01, 2014

Optical encryption and QR codes: secure and noise-free information retrieval.

Optical encryption and QR codes: secure and noise-free information retrieval.

Journal: Optics express
Published: March 14, 2013

Multiplexing of encrypted data using fractal masks.

Multiplexing of encrypted data using fractal masks.

Journal: Optics letters
Published: July 25, 2012

Master key generation to avoid the use of an external reference wave in an experimental JTC encrypting architecture.

Master key generation to avoid the use of an external reference wave in an experimental JTC encrypting architecture.

Journal: Applied optics
Published: April 17, 2012

Experimental multiplexing of encrypted movies using a JTC architecture.

Experimental multiplexing of encrypted movies using a JTC architecture.

Journal: Optics express
Published: March 16, 2012

Optical smart packaging to reduce transmitted information.

Optical smart packaging to reduce transmitted information.

Journal: Optics express
Published: January 26, 2012

Known-plaintext attack on a joint transform correlator encrypting system.

Known-plaintext attack on a joint transform correlator encrypting system.

Journal: Optics letters
Published: November 03, 2010

Efficient encrypting procedure using amplitude and phase as independent channels to display decoy objects.

Efficient encrypting procedure using amplitude and phase as independent channels to display decoy objects.

Journal: Applied optics
Published: June 12, 2009
Showing 1-11 of 11

Last Updated: 09/26/2026