Method and apparatus for data hiding in images

Details Method and apparatus for data hiding in images Method and apparatus for data hiding in images

1996-02-09

1997-11-18

Couso, Jose L.

Image analysis

Image compression or coding

380 54, G06K 936, G06F 758, G06F10114

Patent

active

056895879

ABSTRACT:
A method of hiding a pattern in a host image increases and decreases parameter values at randomly selected host image locations assigned to respective first and second groups. The alteration modifies the statistical behavior of a test statistic equivalent to a linear combination of a large number of instances of respective functions, associated with the pattern, of the parameter values at first and second group locations. The presence or absence of the pattern in a test image is determined by comparing the experimental value of the test statistic associated with the pattern with the expected value of the same sum for an unaltered host image.

REFERENCES:
patent: 4499551 (1985-02-01), Frank
patent: 4673975 (1987-06-01), Inaba et al.
patent: 4783840 (1988-11-01), Song
patent: 5243423 (1993-09-01), DeJean et al.
patent: 5398283 (1995-03-01), Virga

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