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Related Experiment Videos

Wavelet tree quantization for copyright protection watermarking.

Shih-Hao Wang1, Yuan-Pei Lin

  • 1Department of Electronics Engineering, National Chiao Tung University, Hsinchu 300, Taiwan, ROC. shwang.ee90g@nctu.edu.tw

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|September 21, 2004
PubMed
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This study introduces a novel blind watermarking technique using wavelet trees for image copyright protection. The method embeds watermarks in perceptually significant areas, ensuring robustness against various attacks.

Area of Science:

  • Digital Image Processing
  • Information Security
  • Computer Vision

Background:

  • Copyright protection of digital images is crucial.
  • Existing watermarking schemes face challenges with robustness and imperceptibility.
  • Blind watermarking, which does not require the original image for extraction, is highly desirable.

Purpose of the Study:

  • To propose a robust and secure blind watermarking scheme for digital image copyright protection.
  • To enhance the resilience of watermarks against common image processing and geometric attacks.
  • To embed watermarks in perceptually significant regions for improved imperceptibility.

Main Methods:

  • A wavelet-tree-based approach is employed, grouping wavelet coefficients into 'super trees'.

Related Experiment Videos

  • Watermark embedding is achieved through the quantization of these super trees.
  • Watermark bits are embedded in perceptually important frequency bands and spread across spatial regions.

    • Main Results:

    • The proposed scheme demonstrates significant statistical differences for watermark extraction.
    • The watermark exhibits high resistance to frequency-based attacks due to embedding in important frequency bands.
    • The spatial spreading of the watermark enhances robustness against time-domain geometric attacks.

    Conclusions:

    • The wavelet-tree-based blind watermarking scheme offers a robust solution for image copyright protection.
    • The technique effectively balances imperceptibility and robustness against diverse attacks.
    • The proposed method is a promising advancement in secure digital watermarking applications.