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      Two Levels Block Based Wavelet Watermarking Algorithm for Still Colour Images

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      Proceedings of the 2nd BCS International IT Conference 2014 (BCSIIT)

      BCS International IT Conference 2014

      9 - 10 March 2014

      Image processing, DWT, Watermarking

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          Abstract

          A robust watermarking technique is implemented for copyright protection. The proposed method is based on 2-level discrete wavelet transform (DWT). The embedded watermarking information is a mobile phone number including the international code. The first level of the DWT transformation is applied on 16×16 blocks of the host image. All the coefficients of the 8×8 low-low (LL1) first level sub-band are grouped into one matrix. The second level of the DWT is then applied to the grouped matrix from the first level transformation. The highest coefficient from the LL2 sub-band (4×4) is used for embedding the watermark information. The extracting process is blind since it does not require the original image at the receiver side. The distortion in the host image due to the watermarking process is minimal and the PSNR is greater than 60 dB. The proposed algorithm showed robustness against several attacks such as scaling, filtering, cropping, additive noise and JPEG compression.

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          Author and article information

          Contributors
          Conference
          March 2014
          March 2014
          : 1-5
          Affiliations
          School of Engineering,

          University of Bradford,

          UK
          ECE Department,

          Khalifa University of Science,

          Technology and Research,

          UAE
          Article
          10.14236/ewic/BCSIIT2014.9
          © Taha Jassim et al. Published by BCS Learning and Development Ltd. Proceedings of the 2nd BCS International IT Conference 2014, Abu Dhabi, United Arab Emirates

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Proceedings of the 2nd BCS International IT Conference 2014
          BCSIIT
          2
          Abu Dhabi, United Arab Emirates
          9 - 10 March 2014
          Electronic Workshops in Computing (eWiC)
          BCS International IT Conference 2014
          Product
          Product Information: 1477-9358BCS Learning & Development
          Self URI (journal page): https://ewic.bcs.org/
          Categories
          Electronic Workshops in Computing

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