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Proceedings Paper

Perceptual information from OVD diffraction security devices
Author(s): Jean-Frederic Moser; Rene Staub; Wayne Robert Tompkin
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Paper Abstract

The criteria by which optically variable devices are judged are aesthetic, semantic, security, ergonomic, and physical/chemical. This paper addresses ergonomic aspects which relate to the human vision and perceptual-cognitive system. Applying some pertinent rules may help greatly to improve the image visual information for easier, more straight-forward reception of a persistent security message. We consider two important aspects of the human visual system that help to determine the ergonomic response to visual displays created using optical diffraction. The human visual system aspect treats the retinal source of information, which is the retinal signal produced when an image of the external world is projected on the retina. The other aspect is the underlying information-processing mechanism of our brains and its constructive operations, which yields the final perceptual information. In this paper we consider information processing methods hidden in the biology of our cognition system. Findings on the relationship between physiology and psychology, sensory results and the activities of the optic pathway and subjective brightness sensations can be applied directly in designing images. Some effects are demonstrated by video tape.

Paper Details

Date Published: 15 March 1996
PDF: 6 pages
Proc. SPIE 2659, Optical Security and Counterfeit Deterrence Techniques, (15 March 1996); doi: 10.1117/12.235473
Show Author Affiliations
Jean-Frederic Moser, Landis & Gyr Communications Corp. (Switzerland)
Rene Staub, Landis & Gyr Communications Corp. (Switzerland)
Wayne Robert Tompkin, Landis & Gyr Communications Corp. (Switzerland)

Published in SPIE Proceedings Vol. 2659:
Optical Security and Counterfeit Deterrence Techniques
Rudolf L. van Renesse, Editor(s)

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