Image analysis – Applications
Reexamination Certificate
2006-07-04
2006-07-04
Patel, Kanjibhai (Department: 2625)
Image analysis
Applications
Reexamination Certificate
active
07072488
ABSTRACT:
An encrypted image C(i, j) is generated by exclusively ORing pseudo random number values, which are generated using a key k0as a key, and respective bits, except for the LSBs, of B pixel data at respective pixel positions (i, j) of digital image data I(i, j). First check bits B(i, j) corresponding to the pixel positions of pixels are generated based on the image C(i, j) and a conversion table. A digitally watermarked image I′(i, j) is obtained by embedding the first check bits in the LSBs of the corresponding pixel data of the digital image data. Check bits U(i, j) are obtained by encrypting pixel data by exclusively ORing respective bits, except for the LSBs, of B pixel data at positions (i, j) of the image I′(i, j) and the pseudo random numbers. If each check bit U(i, j) matches the LSB of the corresponding B pixel data, it is determined that the corresponding pixel is free from tampering.
REFERENCES:
patent: 5499294 (1996-03-01), Friedman
patent: 5600720 (1997-02-01), Iwamura et al.
patent: 5636292 (1997-06-01), Rhoads
patent: 5666419 (1997-09-01), Yamamoto et al.
patent: 5937395 (1999-08-01), Iwamura
patent: 6088454 (2000-07-01), Nagashima et al.
patent: 6332031 (2001-12-01), Rhoads et al.
patent: 6389152 (2002-05-01), Nakamura et al.
patent: 6425081 (2002-07-01), Iwamura
patent: 6577748 (2003-06-01), Chang
patent: 6633652 (2003-10-01), Donescu
patent: 6636615 (2003-10-01), Rhoads et al.
patent: 6898297 (2005-05-01), Katsura et al.
patent: 2001/0016049 (2001-08-01), Nguyen
patent: 2001/0028715 (2001-10-01), Watanabe
patent: 2001/0046307 (2001-11-01), Wong
patent: 2002/0027612 (2002-03-01), Brill et al.
patent: 2002/0106103 (2002-08-01), Jones et al.
patent: 2002/0191810 (2002-12-01), Fudge et al.
patent: 2003/0011684 (2003-01-01), Narayanaswami et al.
patent: 2003/0128861 (2003-07-01), Rhoads
patent: 11-355547 (1999-12-01), None
patent: 2001-24876 (2001-01-01), None
Mistry O'Neal R.
Patel Kanjibhai
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