
Proceedings Paper
Diffraction-based optical sensor detection system for capture-restricted environmentsFormat | Member Price | Non-Member Price |
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Paper Abstract
The use of digital cameras and camcorders in prohibited areas presents a growing problem. Piracy in the movie
theaters results in huge revenue loss to the motion picture industry every year, but still image and video capture may
present even a bigger threat if performed in high-security locations. While several attempts are being made to
address this issue, an effective solution is yet to be found. We propose to approach this problem using a very
commonly observed optical phenomenon. Cameras and camcorders use CCD and CMOS sensors, which include a
number of photosensitive elements/pixels arranged in a certain fashion. Those are photosites in CCD sensors and
semiconductor elements in CMOS sensors. They are known to reflect a small fraction of incident light, but could
also act as a diffraction grating, resulting in the optical response that could be utilized to identify the presence of
such a sensor. A laser-based detection system is proposed that accounts for the elements in the optical train of the
camera, as well as the eye-safety of the people who could be exposed to optical beam radiation. This paper presents
preliminary experimental data, as well as the proof-of-concept simulation results.
Paper Details
Date Published: 15 April 2008
PDF: 8 pages
Proc. SPIE 6945, Optics and Photonics in Global Homeland Security IV, 69451L (15 April 2008); doi: 10.1117/12.780923
Published in SPIE Proceedings Vol. 6945:
Optics and Photonics in Global Homeland Security IV
Craig S. Halvorson; Daniel Lehrfeld; Theodore T. Saito, Editor(s)
PDF: 8 pages
Proc. SPIE 6945, Optics and Photonics in Global Homeland Security IV, 69451L (15 April 2008); doi: 10.1117/12.780923
Show Author Affiliations
Rahul M. Khandekar, SUNY, Binghamton (United States)
Vladimir V. Nikulin, SUNY, Binghamton (United States)
Published in SPIE Proceedings Vol. 6945:
Optics and Photonics in Global Homeland Security IV
Craig S. Halvorson; Daniel Lehrfeld; Theodore T. Saito, Editor(s)
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