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An extended difference expansion algorithm for reversible watermarking

โœ Scribed by Hsien-Wen Tseng; Chin-Chen Chang

Book ID
108152118
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
302 KB
Volume
26
Category
Article
ISSN
0262-8856

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Difference expansion is widely used in reversible watermarking for raster images, but it cannot be applied to data with low correlation, due to its large distortion. In this paper, an improvement is made to difference expansion technology to make it suitable for two-dimensional (2D) computer-aided d