| 一个完全基于混沌的数字图像认证方案 |
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| 引用本文： | 雷正桥.一个完全基于混沌的数字图像认证方案[J].微电子学与计算机,2011,28(12):49-53. |
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| 作者姓名： | 雷正桥 |
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| 作者单位： | 重庆工业职业技术学院计算机系,重庆,401120 |
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| 基金项目： | 重庆市自然科学基金资助项目(2010BB2047) |
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| 摘 要： | 基于混沌特性提出了一个新颖的数字图像认证方案.首先利用分段线性混沌映射,基于图像的特征信息,生成查询表和二维猫映射的参数;再利用猫映射对原始水印图像进行置乱预处理;最后根据查询表和置乱后的水印完成水印嵌入工作.而水印的提取和认证操作极为简便.理论分析和仿真试验表明该方案安全高效、定位精确,且具有简单,可行性好的特点.
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| 关 键 词： | 混沌 图像认证 图像特征 篡改定位 |
An Entire Chaos-based Scheme for Digital Image Authentication |
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| LEI Zheng-qiao.An Entire Chaos-based Scheme for Digital Image Authentication[J].Microelectronics & Computer,2011,28(12):49-53. |
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| Authors: | LEI Zheng-qiao |
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| Affiliation: | LEI Zheng-qiao(Department of Computer,Chongqing Industry Polytechnic College,Chongqing 401120,China) |
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| Abstract: | By analyzing the limitation of the traditional image authentication schemes,a novel scheme entirely based on chaos is proposed for digital image authentication.A piecewise linear chaotic map is utilized to generate the look up table(LUT) and the parameter of two-dimensional Cat chaotic map,which is based on the image feature.The Cat map is used to pre-permutate the original watermark with diffusion mechanism.On the foundation of LUT and the diffused watermark,the embedding can be completed.While the waterma... |
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| Keywords: | chaos image authentication image feature tamper localization |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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