Image processing system

Details Image processing system Image processing system

G - Physics

06

T

G06T 1/00 (2006.01) G06T 5/00 (2006.01) H04L 9/32 (2006.01) H04N 1/32 (2006.01)

Patent

CA 2465088

Composite image information which is generated by embedding invisible sub-information in visible main image information and recorded on a recording medium is read. A spatial frequency component unique to key information used to restore the sub-information is extracted from the composite image information read from the recording medium. The sub-information is reconstructed from the extracted spatial frequency component.

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