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random permutation中文是什么意思
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- 中文翻译
- 造句
- 随机置换
- random n. 〔罕用语〕胡乱行为，偶然的[随便的]行动[过程]。 ...
- permutation （数学中）排列变化，彻底改变; 而不是排列; 离子交换使水软化; 排列，交换，置换; 排列；置换; 移位; 重新配置
- gerade permutation even permutation 偶置换
- affine permutation 仿射置换
- all permutation 全顺列
- alternate permutation 交错排列
- andre permutation 安得列置换
- circular permutation 环状排列; 循环的变换; 循环交替变换，环状变换; 循环排列; 致环交换
- column permutation 列置换, 列排列
- combination, permutation and 排列组合
- cycle of permutation 排列的循环
- cyclic permutation 环状排列; 循环排列
- cyclical permutation 循环排列
- discordance permutation 不和谐排列
- discordant permutation 不和谐排列
- distribution permutation 分布排列
- even permutation 偶排列 偶置换; 偶置换
- exchange permutation 交换排列
- identical permutation 恒等排列; 恒等置换; 同等排列; 元排列
- identity permutation 恒等排列
- initial permutation 初始排列
- inverse of permutation 逆排列
- inverse permutation 逆置换
- linear permutation 线性排列
- migratory permutation 可移排列
- Random group and random permutation of idea
的随机群和随机置换 - Since watermark is added to visually more important regions of host image according to human visual system , and a pseudo - random permutation is performed in the wavelet domain before the watermark is embedded , which disperse the spatial relationship of pattern . therefore , even if the shape or the major location of the watermark is estimated , it ' s extremely difficult to detect or destroy the watermark with the cipher of permutation unknown
由于利用人眼视觉系统把数字水印嵌入到图像视觉较重要区域中，并且水印在嵌入前进行了小波域上的伪随机置乱，打乱了水印的空间关系，因此在置乱密钥未知的情况下，即使能估计出水印的形状和嵌入的主要位置，对水印的检测和破坏也是非常困难的。 - The watermarking scheme based on wavelet decomposition and discrete cosine transform using a binary pattern or gray - level pattern as the watermark , the scheme initially performs wavelet decomposition of the host image and the watermark with different hierarchy . after the pseudo - random permutation , each decomposed layer of the watermark is embedded into the dct domain of corresponding decomposed layer of the host image
基于小波分解和余弦变换结合的水印方案算法以二值图标或灰度图标作为水印，将原图像和水印信号分别进行不同层次的小波分解，分解后的水印各分量伪随机置乱后分别嵌入到原图像相应分解层各分量的dct域中。
A random permutation is a random ordering of a set of objects, that is, a permutation-valued random variable. The use of random permutations is often fundamental to fields that use randomized algorithms such as coding theory, cryptography, and simulation.
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Last modified time:Mon, 11 Aug 2025 00:29:56 GMT
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