| 基于感兴趣区域的图像认证与自恢复算法 |
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| 引用本文： | 任娟, 王蕴红, 谭铁牛. 基于感兴趣区域的图像认证与自恢复算法. 自动化学报, 2004, 30(6): 833-843. |
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| 作者姓名： | 任娟 王蕴红 谭铁牛 |
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| 作者单位： | 1.中国科学院自动化研究所模式识别国家重点实验室,北京 |
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| 基金项目： | 国家自然科学基金(60172054，69825105)国家“863”高技术研究发展计划基金(2003AA144080)资助 |
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| 摘 要： | 提出了一种基于感兴趣区域的图像认证与自恢复算法,该算法将图像分为两部分;感兴趣区域和背景区域.算法首先利用了基于4×4分块的编码算法对感兴趣区域进行编码，然后通过映射函数将此码流嵌入到背景图像的离散余弦变换系数中.实验表明该算法可以对整幅图像进行完整性认证,同时对被恶意篡改的感兴趣区域也能很好地恢复原来信息.
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| 关 键 词： | 图像自恢复 感兴趣区域 半脆弱性水印 完全脆弱性水印 |
| 收稿时间： | 2003-06-18 |
| 修稿时间： | 2003-06-18 |
A Self-recovery Algorithm Based on Region of Interest |
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| REN Juan, WANG Yun-Hong, TAN Tie-Niu. A Self-recovery Algorithm Based on Region of Interest. ACTA AUTOMATICA SINICA, 2004, 30(6): 833-843. |
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| Authors: | REN Juan WANG Yun-Hong TAN Tie-Niu |
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| Affiliation: | 1. National Lab of Pattern Recognition,Institute of Automation,Chinese Academy of Sceinces,Beijing |
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| Abstract: | A self-recovery algorithm based on region of interest is proposed in this paper. This algorithm divides a host image into two parts: region of interest and region ofbackground. The region of interest is coded based on 4×4 blocks, and the codes are thenembedded into the DCT coefficients of the region of background by a novel mapping function. Experimental results indicate that this scheme can authenticate the whole image, atthe same time, if the region of interest is tampered maliciously, the scheme can recover theoriginal content with good quality. |
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| Keywords: | Self-recovery region of interest semi-fragile watermarking complete fragile watermarking |
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