Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/41369
Title: Robust and reversible numerical set watermarking
Authors: Gupta, G.
Pieprzyk, J.
Kankanhalli, M. 
Keywords: Copyright protection
Watermarking
Issue Date: 2009
Source: Gupta, G.,Pieprzyk, J.,Kankanhalli, M. (2009). Robust and reversible numerical set watermarking. SIGMAP 2009 - International Conference on Signal Processing and Multimedia Applications, Proceedings : 141-148. ScholarBank@NUS Repository.
Abstract: Numeric sets can be used to store and distribute important information such as currency exchange rates and stock forecasts. It is useful to watermark such data for proving ownership in case of illegal distribution by someone. This paper analyzes the numerical set watermarking model presented by Sion et. al in "On watermarking numeric sets", identifies it's weaknesses, and proposes a novel scheme that overcomes these problems. One of the weaknesses of Sion's watermarking scheme is the requirement to have a normally-distributed set, which is not true for many numeric sets such as forecast figures. Experiments indicate that the scheme is also susceptible to subset addition and secondary watermarking attacks. The watermarking model we propose can be used for numeric sets with arbitrary distribution. Theoretical analysis and experimental results show that the scheme is strongly resilient against sorting, subset selection, subset addition, distortion, and secondary watermarking attacks.
Source Title: SIGMAP 2009 - International Conference on Signal Processing and Multimedia Applications, Proceedings
URI: http://scholarbank.nus.edu.sg/handle/10635/41369
ISBN: 9789896740078
Appears in Collections:Staff Publications

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