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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No: 966/CHE/2004A
(22) Date of filing of Application:22/09/2004 (43) Publication Date: 09/06/2006
(54) Title of the invention:
COLOR SELECTION SCHEME FOR
DIGITAL VIDEO WATERMARKING.
(51)International classification:G 06 K 9/00
(31) Priority Document No.10/673,893
(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
Determining a chrominance portion to be watermarked employs a perception-based table that indicates for
various pixel values which of the chrominance portions, if any, should be selected for watermarking. Only the
Y, U, and V values of a pixel are needed to access the table and determine which chrominance portion should
be selected. However, the table may be represented such that it may be accessed using only R, G, and B values.
The table may be modified so that it may indicate which of U or V should be selected, or that neither should be
selected, indicating that this pixel should not be watermarked at all. Advantageously, the table may be
simplified by employing some processing, because a large section of the table may be replaced by a simple test
on the pixel values, e.g., U