极值点

最后，计算局部Radon变换窗口内归一化的线积分值，通过寻找Radon变换空间的极值点确定船尾迹坐标。

At last , normalized line integrals were calculated within the localized Radon transform windows and the extremum in Radon transform space was the corresponding ship wake coordinates .

725K时Mg5Al8熵能明显高于460K，460K时的极值点更靠近零点。

The entropy energy of Mg_5Al_8 at 725K was more than that at 460K , the extremum at 460K much approached to zero ;

函数族P的极值点的一个新的极值性质

A New Extremum Property of the Extreme Points of Class P

应用BP神经网络进行分类识别，为了避免网络权值陷入局部极值点，采用遗传算法来获取网络权值的初值。

Genetic algorithm is used to get the initial value of network weights .

安全因子q极值点附近的漂移波不稳定性

Drift wave instabilities near the extreme point of the safety factor Q

通过对误差极值点、曲率极值点的计算和筛选，得到B样条函数的型值点。

Through the calculation and selection of the extreme points of error and the extreme point of curvature , the B-spline function data points were obtained .

利用SA算法的概率突跳特性，有效避免了PSO算法易陷入局部极值点的缺陷。

The probability-sudden-jump character of SA can avoid getting into local minima of PSO algorithm effectively .

求NURBS自由曲面的等值线&一种基于极值点的追踪方法

Calculating contour line of NURBS surface ── a tracing method based on extreme points

FCM算法容易陷入局部极值点，而得不到最优解。

Third , FCM algorithm is not optimal solution and easy to fall into local extreme point .

在总结以往经验的基础上，对约束极值点的判定总结出三种方法，并在此基础上对拉格朗日（Lagrange）函数的应用做了归纳。

Based on past experiences , three ways of judgement are presented and the application Lagrange function is concluded .

关于模糊ISODATA算法极值点的判定定理

On a judgement theorem of extreme point about fuzzy ISODATA algorithm

本文通过数值求解平板模型中本征模方程，研究了安全因子q极值点附近的低频漂移波稳定性问题。

The low frequency drift wave instabilities near the extreme point of the safety factor q is studied by solving numerically the eigen mode equation in slab model .

对K-means聚类算法而言，其不但需要预先指定聚类的簇数，而且不能真正收敛到局部极值点。

In K-means , it needs to predefine the number of clusters , and can not converge to the local maximum .

本文确定了单叶调和函数族SH（△、Ω）的极值点与支撑点，从而解决了该族上的线性极值问题。

In this paper , the extreme points and support points of class S_H (△,Ω) of the univalent , harmonic functions are determined . Thus the linear extremum on the S_H (△,Ω) can be solved .

解析函数极值点的Frechet导算子问题

The Problem of Frechet Derived Operator for Analytic Function at Extreme Point

介绍了连续小波变换的基本原理，以及利用连续小波变换的极值点进行系统故障检测的方法，并给出了基于MATLAB的仿真实例。

The basic principle of continuous wavelet transform is introduced . The fault detection method based on the extreme value of wavelet transform is presented , and an example of simulation based on MATLAB is given .

分析了Hough变换的特点，并研究了Hough变换域极值点参数的特点，改进了Hough变换在道路目标检测中的应用。

From analyzing the characters of Hough transform and researching on the parameters of Hough transform , we ( improve ) the Hough transform in road detection .

但是，该算法的本身特性决定了算法不趋向于搜索接近极值点的解空间，造成了PSO算法最终解的局部极值性不好；

However , the PSO algorithm does not search the solution space of the points closest to the extrema , which leads to the bad local extrema of the final solutions .

首先对单调NC轨迹曲线进行绘制，进一步用不求极值点坐标而实现自动控制变向的方法，求出NC加工轨迹；

To do this , the monotone curve is firstly drawn , and then without finding the coordinate of the inflexion point , the NC machining path can be obtained by the method of automatic direction control .

这便于使计算制动管路液压波动的频率更为准确，可以方便由制动压力曲线的局部极值点进行汽车ABS的故障诊断。

As a result , the calculation of the fluctuant frequency for braking pipeline hydraulic pressure can be accurately performed , and the fault diagnosis of automobile ABS is easily conducted as well .

在随机Hough变换的虹膜定位和方向小波多尺度极值点检测的鉴别算法基础上，研究了一种快速可靠的虹膜身份鉴别系统。

Based on iris location of randomized Hough transform ( RHT ) and multi-scale directional wavelet max detection , a credible and fast iris ID recognition system is presented .

本文探讨了添加极值点与对称延拓相结合的算法，并利用实验数据证明了这种方法的正确性，从而对EMD分析方法进行了改进。

In the paper , it has brought combining ' symmetrical continuation ' with ' adding extremes ' , and has provided its correctness by making use of datum .

本文完全决定了G，S（G）的闭凸包与闭凸包的极值点、G的支撑点，且对S（G）的支撑点进行了研究。

This paper identifies the closed convex hulls of G , S ( G ), extreme points of the closed convex hulls and the support points of G , and introduces some information about the support point of S ( G ) .

SIFT算法主要包括建立尺度空间，空间极值点检测，确定特征点方向和生成特征描述符四个步骤。

SIFT algorithm mainly includes four steps such as establishment of scale space , detection of extreme space points , determination of feature points direction and generation of feature descriptor .

本文基于文献1的研究工作，进一步论述了非无穷远三极剖面法的探边机理；分析了影响视电阻车（ps）异常幅值和异常极值点位置的因素；

The boundary exploration principle of non-infinite three-electrode profiling is demonstrated further on the basis of literature 1 . The factors influencing both abnormal amplitude of apparent resistivity and location of abnormal extreme point are analysed in detail .

该方法通过离线优选虚拟标准样本，达到快速、准确在线识别故障的目的，很好地解决了FCM算法经常收敛到局部极值点的问题。

Through optimally selecting a group of virtual standard samples off-line , this algorithm can fulfill rapid and accurate on-line fault recognition , so it can effectively solve the problem of local convergence with FCM .

在酸性黑染料废水降解初期会引起COD和色度急剧增大，增大的多少及达到极值点的时间与所用催化剂紧密相关。

In addition , the COD and color can increase rapidly in the initial stage of dye wastewater degraded , the quantity increased and the time spent when the COD reaches the maximum are closely related to the catalyst used .

针对基于神经网络的自组织增长模型的经济增长预测方法中的BP人工神经网络存在易于陷入局部极值点等问题，提出一种改进型神经网络算法。

The prediction provides a scientific basis for government regulation on the economic growth . ( 2 ) An improved network algorithm is presented for to overcome the problem of local extreme points for the BP artificial neural growth model in the economic growth prediction .

针对EMD分解过程中的边界问题，本文提出了直接截取两端数据，镜像法和极值点对称延拓法。

In the process of decomposition for EMD boundary problem , this paper puts forward the interception of data directly at both ends , mirror image method and extreme value point symmetry extension method .

极值点是反映线状要素空间几何的另一重要特征。为此，论文提出了一种基于BLG树（BinaryLineGeneralizationTree）结构特征的线状要素Morphing变换方法。

The extremal points are another important identifier for spatial characteristics of linear features , and then this paper proposes a new method of morphing for two linear features based on their BLG-tree ( Binary Line Generalization Tree ) structures .