Maximum-likelihood sequence decoding of digital image watermarking

George F. Elmasry; Yun-Qing Shi

doi:10.1117/12.344693

9 April 1999 Maximum-likelihood sequence decoding of digital image watermarking

George F. Elmasry, Yun-Qing Shi

Proceedings Volume 3657, Security and Watermarking of Multimedia Contents; (1999) https://doi.org/10.1117/12.344693
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

This paper explores possible methods to detect the watermark signal. We show how using sequence detection techniques, such as maximum likelihood sequence detection (MLSD), can provide the same performance as conventionally used correlation detection while simplifying the detection process. As a result, we can increase the dimension of the watermark signal (achieving higher capability), and keep the increase in computational complexity manageable. We will also show that with MLSD, we can have a measure of confidence level of the detected signal that is directly dependent on the watermark signal to noise ratio (SNR_wm).

Citation Download Citation

George F. Elmasry and Yun-Qing Shi "Maximum-likelihood sequence decoding of digital image watermarking", Proc. SPIE 3657, Security and Watermarking of Multimedia Contents, (9 April 1999); https://doi.org/10.1117/12.344693

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