Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (5): 34-38.doi: 10.3969/j.issn.1000-565X.2010.05.007

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Digital Watermarking Method for Mobile Terminal Based on Image Entropy Classification

Luo Bin1  Gu Wei1  Lü Wan-li1  Tang Jin1  Li Li2   

  1. 1.Key Laboratory of Intelligent Computing and Signal Processing of the Ministry of Education,Anhui University,Hefei 230039,Anhui,China;2.Institute of Graphics and Image,Hangzhou Dianzi University,Hangzhou 310018,Zhejiang,China
  • Received:2009-02-10 Revised:2009-11-04 Online:2010-05-25 Published:2010-05-25
  • Contact: 罗斌（1963-），男，教授，博士生导师，主要从事模式识别与图像处理研究． E-mail:luobin@ahu．edu．cn
  • About author:罗斌（1963-），男，教授，博士生导师，主要从事模式识别与图像处理研究．
  • Supported by:

    国家自然科学基金资助项目（60772122 60703087）; 教育部高等学校博士学科点专项基金资助项目（20070357001）; 安徽省教育厅自然科学研究项目（KJ2008A033）

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Abstract:

In order to protect the copyright of multimedia data of mobile terminals,improve the processing ability and enlarge the memory capacity of mobile terminals,a digital watermarking method is proposed.In this method,a novel codebook is designed based on the image entropy classification,the priority of watermarking embedding is provided for complex texture image regions to obtain high-quality watermarked image,and the conventional search algorithm is substituted with the equal-average equal-variance nearest neighbor one to accelerate the coding.Experi-mental results show that the proposed method can not only improve the codebook quality but also save the codebook training time,and that it is robust to common image processing such as JPEG compression and cropping.

Key words: mobile terminal, codebook design, image entropy classification, vector quantization, digital watermarking