Optical intensity modulation method and system, and optical...

Details Optical intensity modulation method and system, and optical... Optical intensity modulation method and system, and optical...

2006-04-18

2006-04-18

Fuller, Rodney (Department: 2851)

Optics: motion pictures

Special effects

C352S040000, C380S200000, C359S238000

Reexamination Certificate

active

07030956

ABSTRACT:
An optical intensity modulation having a periodicity in the temporal domain is applied on an optical state of an original display image, being displayed on a projection screen or a display screen, that takes into account a human temporal frequency contrast sensitivity characteristics, so that an optical state variation that is independent of the original display image would appear in an image recorded by capturing the display image using an image capturing apparatus, while the optical state variation in the display image being directly viewed remains imperceptible.

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