文章摘要
孙刘杰,李孟涛.基于CMYK颜色空间的光全息水印算法研究[J].包装工程,2012,33(9):27-32.
SUN Liu-jie,LI Meng-tao.Study on Light Holographic Watermarking Algorithm Based on CMYK Color Space[J].Packaging Engineering,2012,33(9):27-32.
基于CMYK颜色空间的光全息水印算法研究
Study on Light Holographic Watermarking Algorithm Based on CMYK Color Space
投稿时间:2012-02-27  修订日期:2012-05-10
DOI:
中文关键词: CMYK颜色空间  数字水印  全息加密  傅里叶变换  小波变换
英文关键词: CMYK color space  digital watermark  holographic encryption  Fourier transform  wavelet transform
基金项目:上海市研究生教育创新计划资助项目;上海市教委重点课程(1K11309001);上海理工大学核心课程(1K00309007)
作者单位
孙刘杰 上海理工大学 上海 200093 
李孟涛 上海理工大学 上海 200093 
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中文摘要:
      在印刷CMYK颜色空间、傅里叶全息加密和数字水印理论的基础上,提出了基于CMYK颜色空间的光全息水印算法。该算法不用转换颜色空间,避免了未印刷就人为导致水印信息的丢失,提高了重建水印的相似度;解密时,由于傅里叶变换的特性,重建水印的共轭图像与原水印图像互相叠加,增强了重建水印的清晰度。实验结果表明,该算法有较好的不可见性和较强鲁棒性,可以抵抗一般图像处理等操作。
英文摘要:
      A light holographic watermarking algorithm based on CMYK color space was put forward based on CMYK color space, Fourier hologram encryption, and digital watermarking theory. The algorithm without color space conversion avoids losing watermark before printing and improving the similarity of the reconstructed watermark; due to the characteristics of the Fourier transform, overlaying the conjugate image of the reconstructed watermark and the original watermark image can increase definition of reconstructed watermark when decrypted. Experimental results showed that the algorithm has good invisibility and strong robustness and is able to resist general image processing operations.
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