Cryptography – Electric signal modification – Having production of printed copy
Patent
1998-01-12
2000-08-15
Laufer, Pinchus M.
Cryptography
Electric signal modification
Having production of printed copy
380 54, 380205, 713176, 283113, 382135, G09C 500, B42D 1500, H04L 900
Patent
active
061048127
ABSTRACT:
An apparatus and process for hiding the secondary image within the primary image and generating a high quality hard copy of the unified elemental image of a variety of media. The process comprises the steps of rasterizing the first image into an first elemental image and rasterizing the second image, compensated with its own inverse, into an second elemental image. The first elemental image and the second elemental image are merged into a unified elemental image based on a predetermined decoding and compensating principle, resulting in the second elemental image being hidden within the first elemental image. An output image is created based on the unified elemental image where the primary image is visible to an un-aided eye while the secondary image is hidden from the un-aided eye.
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Adam Bence
Baros Laszlo
Koltai Ferenc
Takacs Ferenc
Juratrade, Limited
Laufer Pinchus M.
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