【摘要】 设计了一种针对彩色图像打印-扫描过程的基于傅立叶计算全息技术的数字水印系统。在该系统中我们首次提出将傅立叶计算全息数字水印技术应用于彩色图像印刷防伪,并为之设计了相应的提取程序。该系统与目前其他的针对打印-扫描过程的数字水印系统相比,具有抗剪切、盲检测、水印信息量大等特点。在彩色图像印刷防伪方面具有明显的应用前景。更多还原

【Abstract】 Based on Fourier CGH technique,a digital watermarking system for the color image print-and-scan process is presented.The Fourier CGH digital watermarking technique is applied in color image forgery prevention printing.And we also designe an extracting program in the system.Compared with other digital watermarking system that aims at printscan process,the system has the advantages of large information capacity and blind detection.Moreover,the hidden information also survives cropping and scaling attacks.The system can be applied to the color image Forgery Prevention Printing.更多还原