Feature based robust watermarking using image normalization

  • Authors:

  • Wei Lu;Hongtao Lu;Fu-Lai Chung

  • Affiliations:

  • School of Information Science and Technology, Guangdong Key Laboratory of Information Security Technology, Sun Yat-sen University, Guangzhou 510275, China;Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Department of Computing, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong

  • Venue:
  • Computers and Electrical Engineering
  • Year:
  • 2010

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Abstract

This paper presents a robust watermarking scheme based on feature point detection and image normalization. Firstly some stable feature points are detected from the original image using the proposed multiresolution feature point detection filter. Then, image normalization is applied to the disks centered at these feature points. The watermark is embedded in the subband coefficients of DFT domain of each disk separately. And the watermark detection uses the correlation between the watermark embedding coefficients and the original watermark, and does not need the original image. The proposed scheme combines the advantages of feature point detection and image normalization, which can achieve strong robustness to signal processing and geometrical distortions. The experimental results also demonstrate good performance of the proposed scheme.