中英
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random permutation中文是什么意思
- 中文翻譯
- 造句
- 隨機置換
- random n. 〔罕用語〕胡亂行為，偶然的[隨便的]行動[過程]。 ...
- permutation （數(shù)學(xué)中）排列變化，徹底改變; 而不是排列; 離子交換使水軟化; 排列，交換，置換; 排列；置換; 移位; 重新配置
- gerade permutation even permutation 偶置換
- affine permutation 仿射置換
- all permutation 全順列
- alternate permutation 交錯排列
- andre permutation 安得列置換
- circular permutation 環(huán)狀排列; 循環(huán)的變換; 循環(huán)交替變換，環(huán)狀變換; 循環(huán)排列; 致環(huán)交換
- column permutation 列置換, 列排列
- combination, permutation and 排列組合
- cycle of permutation 排列的循環(huán)
- cyclic permutation 環(huán)狀排列; 循環(huán)排列
- cyclical permutation 循環(huán)排列
- discordance permutation 不和諧排列
- discordant permutation 不和諧排列
- distribution permutation 分布排列
- even permutation 偶排列 偶置換; 偶置換
- exchange permutation 交換排列
- identical permutation 恒等排列; 恒等置換; 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 逆置換
- linear permutation 線性排列
- migratory permutation 可移排列
- Random group and random permutation of idea
的隨機群和隨機置換 - 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
由于利用人眼視覺系統(tǒng)把數(shù)字水印嵌入到圖像視覺較重要區(qū)域中，并且水印在嵌入前進(jìn)行了小波域上的偽隨機置亂，打亂了水印的空間關(guān)系，因此在置亂密鑰未知的情況下，即使能估計出水印的形狀和嵌入的主要位置，對水印的檢測和破壞也是非常困難的。 - 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變換結(jié)合的水印方案算法以二值圖標(biāo)或灰度圖標(biāo)作為水印，將原圖像和水印信號分別進(jìn)行不同層次的小波分解，分解后的水印各分量偽隨機置亂后分別嵌入到原圖像相應(yīng)分解層各分量的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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