A new blind watermarking technique based on independent component analysis

Authors:
Dan Yu;Farook Sattar
Affiliations:
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore;School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
Venue:
IWDW'02 Proceedings of the 1st international conference on Digital watermarking
Year:
2002

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Abstract

A vector quantisation (VQ) based watermarking scheme with shadow watermark extraction ability for multi-users is proposed. One watermark is embedded only in the host image, and only the user with the first-class key can extract the original watermark directly; other users with the second-class keys can only extract the shadow watermarks. The watermark can also be obtained by combining all the shadow watermarks.