System and method for hiding and extracting message data in mult

Details System and method for hiding and extracting message data in mult System and method for hiding and extracting message data in mult

1997-06-03

2000-04-25

Johns, Andrew W.

Image analysis

Applications

G06T 900

Patent

active

060553219

ABSTRACT:
The present invention provides a data hiding method of hiding media data in message data and a data extraction method of extracting the hidden data wherein message data is dispersively hidden in media data such as an image or sound to prevent a third person from modifying the message data easily.
More specifically, the present invention relates to a data hiding method in which media data is expressed as a media array while message data is expressed as a message array so that the array elements of the message array can be dispersively hidden in the message array based on a state values specifying a particular array element of the media array, comprising the steps of:

REFERENCES:
patent: 5659726 (1997-08-01), Sandford, II et al.
patent: 5689587 (1997-11-01), Bender et al.
patent: 5721788 (1998-02-01), Powell et al.
patent: 5748783 (1998-05-01), Rhoads

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