A Novel Chaos Sequence Based 3D Fragile Watermarking Scheme

Watermarking is a very important technique for protecting the authorization of digital content, such as, still images, video streams, audio streams and 3D models. In fragile watermarking, the watermark is used for authentication and the hash function is applied to achieve the verification tasks in most fragile watermarking schemes for 3D models. In this paper, a novel Chaos sequence based fragile watermarking scheme for 3D models in spatial domain is proposed. The proposed scheme employs a Chaos sequence generator to generate a Chaos sequence, which is used to generate the embedded watermark. Instead of the hash function, the tampering region can be verified and located by the Chaos sequence based watermark check. The Chaos sequence based watermark is embedded to achieve both the authentication and verification. Experimental results show that the proposed scheme can achieve authentication of the original model and tampering detection of the stego model with insignificant visual distortion.

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