In many optical recognition processes a multiple filters synthesis is required. These filters are usually computer generated holograms in which it is possible to codify different objects to be detected and eventually someone to be refused. In most cases the codification of all this information in binary media produces filters with low light efficiency due to the amount of dark zones, which imposes a practical limit to the amount of information to be codified. Synthesis of composed filters in color photographic films by using a polychromatic source, would allow us to increase the capacity to storage information.

Date Published: 6 July 1999
PDF: 5 pages
Proc. SPIE 3572, 3rd Iberoamerican Optics Meeting and 6th Latin American Meeting on Optics, Lasers, and Their Applications, (6 July 1999); doi: 10.1117/12.358386

Published in SPIE Proceedings Vol. 3572:
3rd Iberoamerican Optics Meeting and 6th Latin American Meeting on Optics, Lasers, and Their Applications
Angela Maria Guzman, Editor(s)