University of Bahrain
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Performance Evaluation of OFDM Based Watermarking Robust to Multipath Spatial Shifts

Show simple item record Pulayikodi, Suja Kalarikkal Tarhuni, Naser Ahmed, Afaq Shiginah, Fahad Bait 2018-07-05T10:30:04Z 2018-07-05T10:30:04Z 2018-01-01
dc.identifier.issn 2210-142X
dc.description.abstract A digital watermark is a visible or invisible pattern embedded in a digital image which can be used for copyright protection, authentication, broadcast monitoring, telemedicine and many more. This paper describes how an efficient CDMA based spread spectrum technique can be combined with the most prominent spectrum efficient OFDM technology to formulate a robust watermarking algorithm which is suitable for image distortions due to time delays and spatial shift that may occur during the transmission of watermarked images. A detailed simulation of embedding and decoding algorithm was performed and compared the performance with the existing DCT, DWT and FWHT based techniques. Simulation results reveal that the proposed algorithm is computationally efficient, robust and is well suited for wireless multipath fading channel. The algorithm was tested against a number of possible noises in the wireless channels and various geometric and signal processing operations. The proposed algorithm is proved to be robust enough to extract a good quality watermark compared to well-known techniques. en_US
dc.language.iso en en_US
dc.publisher University of Bahrain en_US
dc.rights Attribution-NonCommercial-ShareAlike 4.0 International *
dc.rights.uri *
dc.subject Watermarking en_US
dc.subject OFDM en_US
dc.subject Robust en_US
dc.subject Multipath en_US
dc.subject Distortion en_US
dc.title Performance Evaluation of OFDM Based Watermarking Robust to Multipath Spatial Shifts en_US
dc.type Article en_US
dc.volume 07
dc.issue 01
dc.pagestart 51
dc.pageend 58
dc.source.title International Journal of Computing and Digital Systems
dc.abbreviatedsourcetitle IJCDS

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