Parallel implementation of spread spectrum based oblivious visual watermarking using efficient DWT

Authors:
Ali Hassan;M. Shamim Baig
Affiliations:
Department of Cyber Security, Centre for Cyber Technology & Spectrum Management, NUST, Pakistan;Department of Cyber Security, Centre for Cyber Technology & Spectrum Management, NUST, Pakistan
Venue:
ACS'06 Proceedings of the 6th WSEAS international conference on Applied computer science
Year:
2006

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Abstract

Watermarking is a process of adding side information in digital media for the purpose of making an assertion about the digital media or authentication of legal owner of digital media. Adding watermark in a video of high frame rate at run time requires processing of very large amount of data in very short time which is not possible on a single processor computer. A spread spectrum (SS) based watermarking technique is presented in this paper which adds watermark in the carrier digital video obliviously using efficient implementation of Discrete Wavelet Transform in parallel computing environment. Limitations of Human Visual System (HVS) are exploited to embed large amount of side information with higher strength in the carrier digital media.