| 一种有效的文档水印技术 |
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| 引用本文： | 张小华,刘芳,焦李成. 一种有效的文档水印技术[J]. 通信学报, 2003, 24(5): 21-28 |
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| 作者姓名： | 张小华 刘芳 焦李成 |
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| 作者单位： | 西安电子科技大学,雷达信号处理重点实验室,陕西,西安,710071 |
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| 基金项目： | 国家自然科学基金资助项目(60073053，60133010) |
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| 摘 要： | 针对二值纯文本图像，深入分析二值中文和英文文档图像本身结构特点，并在此基础之上结合人类视觉特性，提出了一种具有一定全局顽健性的局部易碎性数字水印方案。首先将文本图像依据内容进行分块，使每一图像子块只包含一个英文单词或一个字，然后提取该块的可嵌入水印的像素点，最后从中随机选一部分点，嵌入水印信息。实验结果表明该算法在不破坏图像质量基础上，能有效抵抗噪音等攻击，同时又能抵抗和定位对文本内容的局部篡改。
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| 关 键 词： | 二值纯文本图像 内容防篡改 顽健性水印 易碎性水印 |
| 文章编号： | 1000-436X(2003)05-0021-08 |
| 修稿时间： | 2001-12-14 |
An effective document watermarking technique |
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| ZHANG Xiao-Hua,LIU Fang,JIAO Li-Cheng. An effective document watermarking technique[J]. Journal on Communications, 2003, 24(5): 21-28 |
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| Authors: | ZHANG Xiao-Hua LIU Fang JIAO Li-Cheng |
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| Abstract: | The character of the binary Chinese and English document image is analyzed in detail, as a result an effective new method is proposed. First, the original document image is cut into several parts, every of which include only one word, then the important pixels of parts is selected out, some of which is selected randomly to embed the watermark bit. The experiment shows the algorithm does not destroy the quality of image, but it can resist several attacks such as signal processing, noise, at the same time, it can be used to detect and locate the slight changes of the multimedia content. |
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| Keywords: | robust watermarking fragile watermarking binary document images content tampering resist |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
