On the Application of Digital Watermarking Technology in Image Encryption
Changhui Yu · Journal of Huaiyin Institute of Technology · 2009
In this paper,three different processing stages on digital watermarking technology are studied.The purpose is to enhance the digital watermarking robustness under the premise of invisibility.(1)The first stage is watermark signal pre-processing.Two value gray sign is used to create a watermark image signal;first chaotic function is used and then neural network is processed for a high degree non-linear to greatly enhance the degree of watermark confidentiality.(2)The second stage is watermark embedding strength degree.Neural network is first constructed followed by training,which then can be used in watermark embedding and extraction.Such networks can achieve the blind algorithm on watermark detection.(3)The third stage is watermark embedding and extraction.The processed watermark signal is embedded into the airspace of the original image through the training of good neural network.The same neural network is also passed to extract the watermark,and then the further watermark detection is processed.Proved by experimental results,the algorithm has good robustness.