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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No: 975/CHE/2004A
(22) Date of filing of Application:24/09/2004 (43) Publication Date: 09/06/2006
(54) Title of the invention:
WATERMARKING SCHEME FOR
DIGITAL VIDEO.
(51)International classification:G 06 K 9/00
, G 06 K 9/36
(31) Priority Document No.10/673,892
(32) Priority Date:29/09/2003
(33) Name of priority country:U.S.A
(87) WIPO No. :
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Applcation No.:
Filed on:
(71) Name of Applicant
LUCENT TECHNOLOGIES INC,
Address of Applicant:
600 MOUNTAIN AVENUE,MURRAY
HILL,,
NEW JERSEY 07974-0636,,
U.S.A.
(72) Name of the Inventor(s):
ZARRABIZADEH,MOHAMMED,
HOSSEIN.
(57)Abstract
Watermark data is effectively placed in at least one of the bit positions, e.g., of the integer portion, of the average
value of at least a selected one of the chrominance portions of up to each block, on up to a frame-by-frame basis.
Values of the selected chrominance portion of individual pixels in a block may be adjusted if necessary in order to
cause the resulting substitution of the selected bit of the average. The bit position replaced may be a function of the
block's busyness. A "margin" value may also be added to the average value in order to better ensure that the bit of
watermark data survives any MPEG encoding, while minimizing resulting artifacts. A receiver extracts the bit of
watermark data from the selected bit position of the average value of the chrominance portion.
The Patent Office Journal 09/06/2006 10843