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《Journal of Data Acquisition and Processing》 2011-01
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Blind Extraction Method for Spread-Spectrum Watermark on Digital Image

Xie Chunhui,Cheng Yimin,Chen Yangkun(Department of Electronic Science & Technology,University of Science & Technology of China,Hefei,230027,China)  
A blind extraction method of spread-spectrum watermark(SSW) on the digital image is presented.By using a genetic algorithm(GA) to solve the optimization problem of two variables with the length and the composition of the estimated sequence,the method can estimate the spread-spectrum(SS) sequence by the transmitter.Finally,the watermark can be blindly extracted by the correlation between the estimated SS sequence and the stego-signal.The method is tested based on the standard test images.Experimental results show that the estimation correction rate for SS sequence is high and the extracted watermark is identifed.
【CateGory Index】： TP309.7
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【Citations】
Chinese Journal Full-text Database 3 Hits
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【Co-citations】
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1 CHANG Yong,JIANG Changsheng,CHEN Zhiwei(College of Automation,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China);Decision-Making Based on Fuzzy Neural Network for Air Combat of Multi-Aircraft against Multi-Target[J];Electronics Optics & Control;2011-04
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