| 王彩印,孔祥维,郭君,李超.基于ICC色彩空间转换的彩色印刷图像数字水印[J].光电子激光,2014,(11):2186~2195 |
| 基于ICC色彩空间转换的彩色印刷图像数字水印 |
| Adaptive color printing image watermarking based on ICC color space conversion |
| 投稿时间：2013-10-04 |
| DOI： |
| 中文关键词: 数字水印 彩色印刷图像 ICC色彩管理技术 人眼视觉系统 CIE L*a*b *颜色空间 图像半色调 |
| 英文关键词:watermarking color printing image ICC color management human visual system CIE L*a*b* color space image halftoning |
| 基金项目:国家自然科学基金(61172109)资助项目 (1.大连理工大学 信号与信息处理学院,辽宁 大连 116024; 2.大连工业大学 轻工与化学工程学院,辽宁 大连 116034) |
|
| 摘要点击次数: 1444 |
| 全文下载次数: 163 |
| 中文摘要: |
| 对现有的数字水印方法应用到彩色印刷图像中存 在水印透明性和鲁棒性差等缺陷, 利用人眼视觉对黄-蓝颜色轴高频变化的敏感度低的特性,提出了基于ICC色彩空间转换 技术的彩色印刷图像数字水印方 法。首先选择与设备无关的CIE L*a*b*颜色空间,在Y-B分 量中嵌入有意义的水印信息；为了抵抗印刷-扫描过程中导致的 图像几何失真,同时避免在同一分量中多次嵌入水印信息导致的图像质量下降,在红- 绿(R-G)分量中嵌入了一个水印同步模 板信号；然后使用调幅加网技术对水印图像进行半色调化处理,使用胶印印刷方式输出；同 时,为了提高水印信号检测的正 确率,在水印检测时,对印刷-扫描图像进行了去网处理。实验结果表明,本文算法对彩 色印刷图像具有很好的水 印透明性,对印刷过程具有较强的鲁棒性,对常规的JPEG压 缩、放大/缩小、旋转等图像处理和几何变换攻击均具 有很强的鲁棒性,可以用于彩色数字图像和印刷图像版权的同步保护。 |
| 英文摘要: |
| Many defects,such as poor robustness and low transparency,appear when a watermarked image is introduced into color printing processes.Based on the feature that the sensitivity of human visual sy stem is low to variations of high frequency along yellow-blue axis,a color printing oriented watermarking method ultilizing ICC color space transforming technologyi s presented in this paper. Watermark information is embedded firstly in the yellow-blue color channel base d on CIEL*a*b* color space which is device independent and then a template signal for watermark synchronization is also emb edded in the red-green color channel in order to resist geometric distortion during print-scanning process and to avoid image degradati on because of multiple embedding in yellow-blue color channel.The watermarked images is then screened with AM screening process and p rinted with lithography.To improve the accuracy of watermarking signal detection,de-screening is used before detecting the waterm ark.According to the results,the preserve algorithm preserves watermark ′s transparency well and it is robust to printing p rocess.Meanwhile,it is also robust to conventional image processing and geometric transformation,such as JEPG compressing,image enlargem ent,reduction and rotation.This method can be used synchronously in both digital and hardcopy color images for copyright prote ction. |
| 查看全文 下载PDF阅读器 |
| 关闭 |
|
|
|
|
|