为了准确、快速地将拷贝图像识别出来,提出一种基于CS-LBP(centrally symmetric local binary pattern)纹理与位图像统计的图像哈希算法。算法首先对图像作预处理;然后利用三级小波分解得到近似图像和高频信息,对第二、三级近似图像利用...为了准确、快速地将拷贝图像识别出来,提出一种基于CS-LBP(centrally symmetric local binary pattern)纹理与位图像统计的图像哈希算法。算法首先对图像作预处理;然后利用三级小波分解得到近似图像和高频信息,对第二、三级近似图像利用Ring分割,提取每一环的统计特征,对第二、三级高频信息的水平方向分量和垂直方向分量进行位图像分解,提取统计特征;最后将所有的低频和高频特征联合起来生成图像哈希序列。实验结果表明所提算法的分类性能优于现有的一些哈希算法,在拷贝检测应用上具有很好的准确率。展开更多
In this paper,a novel bit-level image encryption method based on dynamic grouping is proposed.In the proposed method,the plain-image is divided into several groups randomly,then permutation-diffusion process on bit le...In this paper,a novel bit-level image encryption method based on dynamic grouping is proposed.In the proposed method,the plain-image is divided into several groups randomly,then permutation-diffusion process on bit level is carried out.The keystream generated by logistic map is related to the plain-image,which confuses the relationship between the plain-image and the cipher-image.The computer simulation results of statistical analysis,information entropy analysis and sensitivity analysis show that the proposed encryption method is secure and reliable enough to be used for communication application.展开更多
Y98-61345-1393 9905342图像处理(含3篇文章)=Session:image processing[会,英]//1997 IEEE International Conference on FuzzySystems,Vol.3.—1393～1410(NiG)本部分由三篇论文组成。内容涉及面部特征使用模糊聚类的图像分割。
文摘为了准确、快速地将拷贝图像识别出来,提出一种基于CS-LBP(centrally symmetric local binary pattern)纹理与位图像统计的图像哈希算法。算法首先对图像作预处理;然后利用三级小波分解得到近似图像和高频信息,对第二、三级近似图像利用Ring分割,提取每一环的统计特征,对第二、三级高频信息的水平方向分量和垂直方向分量进行位图像分解,提取统计特征;最后将所有的低频和高频特征联合起来生成图像哈希序列。实验结果表明所提算法的分类性能优于现有的一些哈希算法,在拷贝检测应用上具有很好的准确率。
文摘In this paper,a novel bit-level image encryption method based on dynamic grouping is proposed.In the proposed method,the plain-image is divided into several groups randomly,then permutation-diffusion process on bit level is carried out.The keystream generated by logistic map is related to the plain-image,which confuses the relationship between the plain-image and the cipher-image.The computer simulation results of statistical analysis,information entropy analysis and sensitivity analysis show that the proposed encryption method is secure and reliable enough to be used for communication application.
文摘Y98-61345-1393 9905342图像处理(含3篇文章)=Session:image processing[会,英]//1997 IEEE International Conference on FuzzySystems,Vol.3.—1393～1410(NiG)本部分由三篇论文组成。内容涉及面部特征使用模糊聚类的图像分割。
