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Towards a telltale watermarking technique for tamper-proofing
Kundur, D.; Hatzinakos, D.;
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Volume 2,
4-7 Oct. 1998
Page(s):409
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413 vol.2
Abstract:
In this paper we present a novel fragile watermarking scheme for the tamper-proofing of multimedia signals. Unlike previously proposed techniques, the novel approach provides spatial and frequency domain information on how the signal is modified. We call such a technique a telltale tamper-proofing method. Our design embeds a fragile watermark in the discrete wavelet domain of the signal by quantizing the corresponding coefficients with user-specified keys. Tamper detection is possible in the localized spatial and frequency regions of the given signal. We provide analysis, simulations and comparisons with two other tamper-proofing methods to show the potential of the proposed approach in detecting and characterizing the distortion imposed on the signal
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