电子科技大学学报2017，Vol.46Issue(3)：529-536,8.DOI:10.3969/j.issn.1001-0548.2017.03.009
面向保真印刷的CMYK图像鲁棒水印方法
Robust Watermarking Applying to CMYK Printed Image for Fidelity Printing
摘要
Abstract
The challenges faced with printed image watermarking applications mainly are the robustness against distortion caused by print-scanning processing and the color fidelity of printed images.Based on the feature of CMYK color space and human visual system,this paper presents a robust CMYK printed image watermarking,which embeds the informative watermark and the structure template signal respectively in the Y color information channel and K color information channel.The embedded template enables the necessary robustness against geometric distortions in print-scanning process.A spatial perceptual mask is used to reshape the embedded energy after it is inverted to the spatial domain,which significantly improves the color fidelity and the image quality.A series of proof tests have been carried out on lithographic printing presses and shows that the watermark embedded in the CMYK images is well preserved and can be extracted with a high quality,and simultaneously,a remarkable fidelity of color and tones on printed copies is also well preserved.关键词
CMYK颜色空间/数字水印/保真印刷/视觉蒙版/印刷图像Key words
CMYK color space/digital watermarking/fidelity printing/perceptual mask/printed image分类
信息技术与安全科学引用本文复制引用
王彩印,孔祥维,李超..面向保真印刷的CMYK图像鲁棒水印方法[J].电子科技大学学报,2017,46(3):529-536,8.基金项目
国家自然科学基金创新研究群体(71421001) （71421001）
