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《Journal of Tianjin Normal University(Natural Science Edition)》 2007-01
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A New Algorithm of Dual-function Watermark for JPEG Image

WANG Jin-shen,DAI Yue-wei,WANG Zhi-quan(School of Automation,Nanjing University of Science & Technology,Nanjing 210094,China)  
A JPEG image watermark scheme with copyright protection and content authentication is proposed.Copyright protection is achieved by embedding some fixed data.Content authentication is achieved by embedding the authentication code with the 'semi-fragile' property.An improved watermark embedding algorithm is proposed according to the need of feature forming by using DEW scheme.The lower DCT region is used to form feature code while the higher one is used to embed watermarks.An experiment on image object demonstrates the effectiveness of the scheme.
【Fund】: 国家自然科学基金项目(60374066)
【CateGory Index】: TP391.41
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