Suprathreshold stochastic resonance and maximizing network for watermark detection
Rajib Kumar Jha, Bhupendra Gupta, Deepak Mishra, Prabir K. Biswas · Journal of Electronic Imaging · 2012
We propose a novel method that improves watermark detection performance, based on suprathreshold stochastic resonance (SSR) with a maximizing network. The detection performance is measured in terms of correlation. The proposed method has been tested on different gray-scale images, and we found that an original image is not required for watermark detection, so this method is blind. We improved the correlation between an original watermark and the SSR with maximizing network-based discrete wavelet transform coefficients of the watermarked image. Our experimental results have been compared with the different existing techniques and were found superior in terms of correlation and ratio of correlation to threshold.