欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
在数字水印的初始化阶段对水印图像进行加密，可以减少原始图像信息的空间相关性，增强秘密信息的随机性和保密性，从而提高算法对各种攻击的鲁棒性。Logistic混沌序列由于具有对初始条件的敏感性以及类似白噪声的统计特性，已经被广泛应用于二值图像的加密算法。但是传统的基于Logistic混沌序列的算法无法加密较为复杂且能够记录更多内容的灰度图像，针对此问题文章提出了一种基于映射序列位扩展的灰度图像混沌加密算法。实验表明，算法在加密灰度图像时效果较好而且同具有类似功能的Amold置乱算法相比，新算法具有更高的安全性和时效性。
英文摘要：
It will reduce the space relativity of original image information and strengthen the randomicity of encrypted information and largely improve the safety of watermarking system if the image had been encrypted during the phase of initializing digital watermarking. Logistic chaotic sequence has been used in shuffling and encrypting the binary image widely, because it sensitively depends upon its initial value and it has the statistical characteristic like which the white noise has. But the original Logistic arithmetic cant encrypt the gray image that can record more information. The paper has designed a new encrypting arithmetic which is based on expanding the bits of mapped sequence and Logistic chaotic sequence. The experiment shows that the new arithmetic is excel/ent and effective in encrypting the gray image, and also is safer and faster than Arnold arithmetic in encryping the gray image.
同期刊论文项目
同项目期刊论文
期刊信息
位置：