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A Robust Zero-Watermark Algorithm Based on Singular Value Decomposition and Discreet Cosine Transform

  • Tianyu Ye
Part of the Communications in Computer and Information Science book series (CCIS, volume 137)

Abstract

A robust zero-watermark algorithm is proposed, which is based on singular value decomposition and discreet cosine transform. The image is firstly spilt into non-overlapping blocks. Afterwards, every block is conducted with singular value decomposition, and its singular value matrix is transformed with discreet cosine transform. The robust zero-watermark sequence is derived from comparing the numerical relationship between two direct coefficients from adjacent blocks. Experimental results of robustness tests show that it has good robustness against various attacks.

Keywords

Digital watermarking zero-watermark singular value decomposition discreet cosine transform similarity 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Tianyu Ye
    • 1
  1. 1.College of Information & Electronic EngineeringZhejiang Gongshang UniversityHangzhouP.R. China

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