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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Public Watermarking Scheme Based on Multiresolution Representation and Double Hilbert Scanning
verfasst von : Zhiqiang Yao, Liping Chen, Rihong Pan, Boxian Zou, Licong Chen
Erschienen in: Computational Intelligence and Security
Verlag: Springer Berlin Heidelberg
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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.