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《Computer Engineering and Design》 2005-01
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Embedding technique with gray digital watermark based on neural network

GU Tao, LI Xu( Department of Computer, North China Institute of Science and Technology, Beijing 101601, China; Department of Mechanics and Electronics Engineering, North China College of Science and Technology, Beijing 101601, China)  
A method of embedding a gray digital watermark into a color image is proposed. By discrete cosine transform technique, the gray digital watermark is encoded into a series of binary numbers for watermarking. The relational model based on neural network is established among those selected pixels of color image. Binary numbers of watermark are embed by adjusting the value between the selected pixels of the color image and the output of the model. The robust performance of the embed watermark is enhanced by the information enlarged technique. The embed watermark can be extracted without original image but by the same model and inversed discrete cosine transform. Experiment results show that the proposed technique is very robust against some image processing operations and joint photographic experts group (JPEG) lossy compression.
【Fund】: 华北科技学院博士启动基金项目(2003A-7)。
【CateGory Index】: TP309
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