Abstract
In this paper, we develop a watermarking scheme for image authentication and verification. The watermarking scheme for tamper detection of an image is fragile and block-based. Such a scheme has good tamper localization and high tamper detection rate. The security of our scheme depends on a secret key, even though the attacker got the original watermark pattern and watermarking algorithm. The watermark extraction process does not need the original image and original watermark. The proposed scheme provides higher level of security and high performance with low computational complexity. This scheme is secure, fast, and able to detect and localize tampered areas against the well-known vector quantization attack. Experimental results indicate the effectiveness and efficiency of the algorithm.
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