Public watermarking scheme based on multiresolution representation and double hilbert scanning

Authors:
Zhiqiang Yao;Liping Chen;Rihong Pan;Boxian Zou;Licong Chen
Affiliations:
Department of Computer Science, Fujian Normal University, Fuzhou, China;Department of Computer Science, Fujian Normal University, Fuzhou, China;Department of Computer Science, Fujian Normal University, Fuzhou, China;Department of Computer Science, Fujian Normal University, Fuzhou, China;Department of Computer Science, Fujian Normal University, Fuzhou, China
Venue:
CIS'05 Proceedings of the 2005 international conference on Computational Intelligence and Security - Volume Part II
Year:
2005

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Abstract

A novel robust watermarking algorithm is presented using multiresolution representation of quasi-uniform cubic B-spline curves. The 4×4 blocks of host image are reindexed into 1-D in Hilbert scanning order. Every two neighbor blocks from Hilbert sequence are selected, and part pixels in this two blocks are taken as control points by Hilbert scanning order to define a couple of quasi-uniform cubic B-spline curves. The wavelet-based multiresolution representations of quasi-uniform B-spline curves are carried out and the low-resolution control points of quasi-uniform B-spline curves are modified according to a binary watermark. Experimental results show that this scheme is strongly against the attacks of filtering, JPEG compression and translation.