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dc.contributor.authorJassim, Taha D.*
dc.contributor.authorAl-Ahmad, Hussain*
dc.contributor.authorAbd-Alhameed, Raed*
dc.contributor.authorAl-Gindy, Ahmed M.N.*
dc.date.accessioned2016-11-23T18:25:41Z
dc.date.available2016-11-23T18:25:41Z
dc.date.issued2014
dc.identifier.citationJassim TD, Al-Ahmad H, Abd-Alhameed R et al (2014) Two levels block based wavelet watermarking algorithm for still colour images. In: Proceedings of the 2nd BCS International IT Conference. 9-10 Mar 2014, Abu Dhabi, UAE.
dc.identifier.urihttp://hdl.handle.net/10454/10656
dc.descriptionNo
dc.description.abstractA 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.
dc.subjectImage processing
dc.subjectDWT
dc.subjectWatermarking
dc.titleTwo levels block based wavelet watermarking algorithm for still colour images
dc.status.refereedYes
dc.typeConference paper
dc.type.versionNo full-text in the repository
dc.identifier.doihttps://doi.org/10.14236/ewic/bcsme2014.9


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