最大后验估计 meaning in Chinese
maximum a posteriori estimation
Examples
- The expectation - maximization ( em ) algorithm proposed by dempster , laird and rubin in 1977 is a general methodology for maximum likelihood ( ml ) or maximum a posterriori ( map ) estimation when the observations can be viewed as incomplete data
Dempster , laird和rubin于1977年提出的em算法是一种用于不完全数据情形下进行最大似然估计或最大后验估计的方法。 - 3 , on the base of the traditional spatial filtering , the author present , a new despeckle algorithm , that make use of iterated processing and correlated neighbourhood model , iterated filtering method of the sar image combining the correlated neighbourhood model with maximum a posteriori filter . first , a series of templates refecting direction information are established and every template is present for a kind of neighbour structure . then on the basis of sar images statistical property , the maximum a posteriori estimate of the real intensity under observation image values is got by bayes formulatio - n
3 、针对传统空间滤波器的不足，引入迭代处理和相关邻域模型的概念，提出了基于相关邻域模型的最大后验迭代滤波。该算法引用一系列反映局部边界特征的邻域模型，以描述图像的细节。引入强度的先验概率分布模型，利用bayes方法，对各个结构进行实际强度的最大后验估计。 - 2 ) evaluation of robustness against noise removal attack . by analyzing the mathematical models of noise removal attack , we deduce some indexes for robustness evaluation defined in frequency domain , power spectrum and locally variances of difference images . 3 ) evaluation of the detectability of lsb information hiding algorithm
考察了密信信号隐藏后差值图象的频域特性、功率谱特性和局部方差分布特性，建立了频域特性与线性滤波攻击效率、功率谱特性与维纳滤波攻击效率、局部方差分布特性与最大后验估计攻击效率之间的关系。 - Under a unified frame , different despeckling sub - algorithms are designed to despeckle different kinds of regions : a modified acmap algorithm ( simulated annealing correlated neighborhood map despeckling algorithm ) is used to depress the speckle in homogeneous regions , and the macro structural information is introduced into the despeckling algorithm in heterogeneous regions to protect the structures
在统一的框架下，针对不同的描述模型的特点设计了相应的相干斑抑制方法。针对平稳区域设计了改进的acmap算法(基于模拟退火和相关邻域的最大后验估计相干斑抑制算法) ，针对非平稳区域将分割得到的宏观结构信息引入到算法中，有效的保护了宏观结构性信息。