Towards a Telltale Watermarking Technique for Tamper-Proofing - Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
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چکیده
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.
منابع مشابه
Towards a Telltale Watermarking Technique for Tamper-Proofing
In this paper we present a novel fragile watermarking scheme for the tamper-proo ng of multimedia signals. Unlike previously proposed techniques, the novel approach provides spatial and frequency domain information on how the signal is modi ed. We call such a technique a telltale tamper-proo ng method. Our design embeds a fragile watermark in the discrete wavelet domain of the signal by quantiz...
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In recent literature many strategies for attacking and subverting a watermark have been presented. Such attacks suggest t ha t the ability t o embed non-erasable watermarks does not necessarily imply tha t the watermarking scheme can be used t o establish ownership. The main aim of this paper is t o formulate necessary and sufzcient requirements for a watermarking scheme t o be able t o resolve...
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In this paper we present a novel fragile watermarking scheme for the tamper-proo ng of multimedia signals. Unlike previously proposed techniques, the novel approach provides spatial and frequency domain information on how the signal is modi ed. We call such a technique a telltale tamper-proo ng method. Our design embeds a fragile watermark in the discrete wavelet domain of the signal by quantiz...
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We propose a novel concept for the restoration of locally degraded images based on telltale fragile watermarking. In our approach a data stream culled a watermark is embedded in the wavelet domain of an image such that munipulation of the image is reflected in the embedded stream. The altered stream is used for semi-blind restoration to undo tampering. It is assumed that the embedded watermark ...
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تاریخ انتشار 1998