permuted

Various sources of images make the permuted alias image diversity .

源图像的来源不同，构成的置换混叠图也具有多样性。

Sparsity representation model of permuted alias image is obtained by its mathematical model .

首先，根据这类置换混叠图像的数学模型，得到其稀疏表示的模型。

Four differential images in four directions are obtained by four direction operating of permuted alias image .

对置换混叠图像做四向差分运算，得到四个方向上的差分图像。

This dissertation proposes methods of blind separation in various characteristic domain for various type of permuted alias images .

本文针对不同类型的置换混叠图像，在不同的特征域提出了置换混叠图像盲分离方法。

Computer descriptors permuted index system

计算机叙词轮排索引系统

A blind separation algorithm based on differential evolution is proposed for a type of permuted alias image with gaussian blur difference .

针对一类存在高斯模糊差异的置换混叠图像，提出基于差分进化的高斯模糊置换混叠图像盲分离。

In this dissertation , we investigate the BSS problem of the permuted image and introduce the thought into image tamper detection .

本文围绕置换混叠图像的盲分离问题展开研究，并将这种置换盲分离思想引入到图像篡改检测研究中，为目前广泛研究的图像被动取证提供新的解决方案。

When the sources contain interpolated images , a novel blind separation method based on interpolation factors estimation is proposed for permuted interpolated image .

在假定置换混叠图像中包含插值图像的基础上，提出了一种插值因子估计算法来实现插值放大置换混叠图像的盲分离。

In the improved means , AC coefficients are permuted by different permutation list . DC coefficients are encrypted with AES algorithm .

改进的方案中AC系数用不同的置乱表置乱，DC系数用高强度的加密算法AES加密。

An algorithm about permuted alias image blind separation based noise detection is proposed according to a class of permuted alias image with noise difference .

针对这类在被置换区域和置换区域之间存在噪声差异的置换混叠图像，提出一种基于噪声检测置换混叠图像盲分离算法。

It involved a scrambling system in which time segments were permuted , by means of nine magnetic heads simultaneously reading a magnetic tape .

这是一个扰乱式的加密系统，它用9个磁头同时对磁带进行读写，从而将时间片段打乱顺序。

When the sources are blurred images , two novel single-channel blind separation algorithms for permuted blurred image are proposed by using blind restoration .

在源信号为模糊图像的条件下，利用模糊置换混叠图像的频域特性估计出模糊参数，提出了两种基于盲复原的盲分离方法。

Firstly the original image is divided into several macro blocks in the light of certain size , and macro block within each row are permuted .

提出了一种基于二次置乱的图像加密算法，该算法将图像按一定的大小划分成若干宏块，对每一行的宏块进行置乱。

The post display relation refers to the relation between the sentences created after the permuted descriptors and the topics of the indexed literature .

后显关系是在后组式检索系统中，主题词轮排后产生的诸语句与被标引文献主题之间的关系。

Differential image of permuted alias image is divided into sub-blocks which is randomly assigned a threshold and all the thresholds formed a threshold vector .

把置换混叠图像的梯度图像分成小块，并为每个小块设定一个阈值，组成一个阈值向量。

The watermark sequence was permuted pseudo_ randomly first , and then the watermark was embedded in the larger coefficients of middle frequency range detail signal adaptively .

它先对水印序列进行伪随机排序，然后自适应地把水印嵌入到原语音信号小波分解中等尺度绝对值较大的分量上。

Then , the masked watermark is used to modify the 4th , 5th , or 6th bit of the corresponding pixels in the permuted image .

其次，将加密水印嵌入到变换图像位平面的第4、5、6位；

The key of detecting and seperating permuting images is to find characteristic difference , which can be shown when permuted alias image is projected on a characteristic domain .

检测和分离出置换图像的关键是找到置换图像和被置换图像之间特征差异，即找到显现特征差异的特征域。

First , for any size of gray image or colorful image , it is permuted by expanded Arnold with 1 round and then divided into 2 × 2 sizes of blocks .

首先，对任意大小的灰度或彩色图像进行1轮扩展的Arnold置乱，把置乱后的图像分成2x2子块。

A preamble is formed by an arbitrary Permuted sequence of F frequencies , so it is possessed of multiaccess capability and low propability of exploitation .

利用F个频率的任意排列构成同步头，使其具有多址工作能力及低窃听率。

Urbanization is a process of expansion of urban regional space , its fast development can provide employment opportunity for people who transfer from rural area , and it also can offer land of permuted from rural to the urbanization .

城市化是一个城市地域空间不断扩展的过程，它的快速发展为农村转移的人口提供就业机会，从农村居民点用地置换出的土地指标为城市化发展提供有利的建设用地保障。

Different region of permuted alias image have noise difference , for permuting and permuted images come from different source images and they usually be infected by noise in the process of acquisition , transmission and processing .

置换混叠图像中的被置换图像和置换图像的来源常常是不同的，这些图像在获取、传输和处理等环节常常感染上噪声，从而使得置换后的图像的不同区域存在着噪声差异。

Remote sensing image was decompressed into frequency domain image by wavelet transform and the bit planes in frequency domain image were permuted by SBI transform seperately . The resulting data was compressed by arithmetic encoder .

采用小波变换对遥感图像进行分解，将生成的频域数据按不同比特平面分别进行SBI变换并用算术编码进行压缩。

It uses permuted watermark to generate address codes , then finds the corresponding position in DCT domain blocks of host image and changes the coefficient value of the neighboring pixels according to a chaotic pseudo-random sequence .

用置乱后的水印生成地址码，根据地址码在载体图像的DCT域块上找到对应的参考位置，并根据一个混沌随机序列改变该参考位置邻域的系数值。

Any column of the matrix can be permuted randomly , and the permutation between columns should satisfy the form which is the automorphism group of the binary cyclic Turbo code generated by the feedback polynomial .

该矩阵的任意一列可采用随机交织方式，而列间交织方式必须是按由反馈多项式生成的循环码字集的自同构群构成。

The scanning lines of the image are permuted randomly to balance the energy distributing of the image scanning lines , then the watermark sequence is embedded in the image with the spread spectrum watermarking algorithm to produce the watermarked image .

通过对图像扫描行序列进行随机置乱，以平均图像扫描行序列频谱能量，然后采用扩频水印算法嵌入水印序列。

In this algorithm , the unconstrained solutions are permuted in a special order according to the absolute values of variable coefficients of the objective function so as to search the optimum solution in the aggregate of minimums with an accelerated convergence speed .

它利用目标函数变量系数绝对值大小的相对关系，对无约束条件解进行排序，在最小解集中寻找最优解，以加快收敛速度。

The wavelet coefficient of the original image is got through wavelet transform , and the low frequency coefficient is seen as a sub-image . Then the binary watermark image is permuted , the watermark is embedded into the coefficient which got from the DCT of the sub-image .

通过小波变换得到载体图像的高频和低频系数，将低频系数作为一个子图像；再将二值水印图像置乱，在子图像的离散余弦变换得到的系数中嵌入水印。

The mathematical model of the permuted image is obtained by its definition . According to the permutation mixing matrix is a special binary matrix , of which each entry equals 0 or 1 , a BSS model of the permuted image is described by estimating the mixing matrix .

根据置换混叠图像的定义给出了其数学模型，并在置换混合矩阵为特殊二值矩阵（0、1矩阵）的基础上，提出了基于混合矩阵估计的置换混叠盲分离模型。