Mean-quantization-based fragile watermarking for image authentication

Gwo-Jong Yu; Chun-Shien Lu; Hong-Yuan Mark Liao

doi:10.1117/1.1384885

1 July 2001 Mean-quantization-based fragile watermarking for image authentication

Gwo-Jong Yu, Chun-Shien Lu, Hong-Yuan Mark Liao

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Optical Engineering, Vol. 40, Issue 7, (July 2001). https://doi.org/10.1117/1.1384885

The authors propose an image authentication scheme, which is able to detect malicious tampering while tolerating some incidental distortions. By modeling the magnitude changes caused by incidental distortion and malicious tampering as Gaussian distributions with small and large variances, respectively, they propose to embed a watermark by using a mean-quantization technique in the wavelet domain. The proposed scheme is superior to the conventional quantization-based approaches in credibility of authentication. Statistical analysis is conducted to show that the probabilities of watermark errors caused by malicious tampering and incidental distortion will be, respectively, maximized and minimized when the new scheme is applied. Experimental results demonstrate that the credibility of the method is superior to that of the conventional quantization-based methods under malicious attack followed by an incidental modification, such as JPEG compression, sharpening or blurring.

©(2001) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Gwo-Jong Yu, Chun-Shien Lu, and Hong-Yuan Mark Liao "Mean-quantization-based fragile watermarking for image authentication," Optical Engineering 40(7), (1 July 2001). https://doi.org/10.1117/1.1384885

Published: 1 July 2001

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