| 一种抗JPEG压缩的彩色图像半脆弱水印算法 |
| |
| 引用本文： | 王孔清,王希常,刘江.一种抗JPEG压缩的彩色图像半脆弱水印算法[J].计算机安全,2009(2). |
| |
| 作者姓名： | 王孔清 王希常 刘江 |
| |
| 作者单位： | 1. 山东师范大学,信息科学与工程学院,山东,济南,250014
2. 山东山大鸥玛软件有限公司,山东,济南,250100 |
| |
| 摘 要： | 提出了一种抗JPEG有损压缩的真彩图像半脆弱水印算法.采用YCbCr颜色空间,水印的生成和嵌入均在亮度分量进行.由图像基本特征生成水印,嵌入时对亮度分量进行分块DCT变换,选择每个分块的中频系数作为水印的嵌入位置.实验表明,该算法透明性好,而且对JPEG有损压缩具有较强的鲁棒性,对剪切、替换等恶意篡改做出报警并确定篡改位置.水印检测不需要原始图像,水印系统的安全性依赖于图像的特征及其置乱函数,因此,具有较高的安全性.
|
| 关 键 词： | 彩色图像 半脆弱水印 篡改检测 JPEG有损压缩 |
Semi-Fragile Watermarking Algorithm for Color Image Accept JPEG |
| |
| WANG Kong-qing,WANG Xi-chang,LIU Jiang.Semi-Fragile Watermarking Algorithm for Color Image Accept JPEG[J].Network & Computer Security,2009(2). |
| |
| Authors: | WANG Kong-qing WANG Xi-chang LIU Jiang |
| |
| Affiliation: | 1.School of Information Science & Engineering;ShanDong Normal University;Jinan;Shandong 250014;China;2.ShanDong ShanDa Oumasoft Co.;LTD.;Shandong 250100;China |
| |
| Abstract: | A semi-fragile watermarking algorithm for color image accept JPEG compression was presented. Based on the YCbCr color space, the watermark was generated and embedded in the luminance component. Watermarking was generated by the basic characteristics of Images. The luminance component was dealt with the DCT-block when embedded watermarking. And the middle frequency coefficient of each block was selected as the watermark embedding position. The experiments show that the algorithm, with an excellent transparen... |
| |
| Keywords: | color image semi-fragile watermarking tamper detection JPEG |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
