矢量场

The Multi-Scale Image Segmentation Algorithm Based on Gaussian Vector Field Snake Model .

基于高斯矢量场的多尺度水平集图像分割算法。

Gravitational field is a kind of vector field, and the description of gravitational force by general relativity is very effective.

引力场是一种矢量场，广义相对论对引力问题的描述是非常有效的。

Fast Line Integral Convolution with constant filter kernels as well as with triangular filter kernels are presented,which are faster than the original Line Integral Convolution approach about an order of magnitude in rendering actual vector fields.

针对这个问题实现了基于常数滤波卷积核的快速线积分卷积算法，提出并论证了基于三角形滤波卷积核的快速线积分卷积算法，对于实际矢量场，上述两种方法均将运算速度提高了一个数量级，而基于三角形滤波卷积核的快速线积分卷积算法的结果使图像更加平滑。

This spatial information is normalized gradient vector information instead of ordinary gradient information,and it can enhance the noise resistibility greatly during coarse registration.

文中利用的空间信息不同于一般的图像梯度信息，它是归一化的GVF矢量场信息，把它用于粗配准，抗噪性能良好。

A set of new method to deduce vector magnetic field from Stokes parameters for FeI 1 .56~Arn zeeman-sensitive lines is put forward, and the deduced results from our infrared polarimeter are compared with those from Huairou Solar Magnetic Field Telescope.

同时建立了一套从 Stokes参量反演磁矢量场的方法，并将反演的结果与怀柔太阳磁场望远镜的观测结果进行了比对。

The motionless backgroup situation usually happens at the video camera parked to opposite quiescent condition , the first wipe off yawp by using pretreatment method,the second using the method of difference Statistic in two frame to analyse and compute background , Above this base to utilize the resumeed background and present frame message detect movement target and it"s movement track ; In dynamic backgroup movement image,it is very difficult to exactly compute ground since the background is varied complexly , the article research the optical flow model、 background model、 moving object detection based on entropy,and depart target from background in movement picture , detect moving target and plain it"s track.

静止背景的情况通常发生在摄像机相对静止状态，首先用预处理的方法去除噪声，其次采用帧间差分统计的方法进行分析计算背景，在此基础之上利用恢复的背景及当前帧的信息检测运动目标及其运动轨迹；对于动态背景的运动图像，由于背景是不断变化且呈现出复杂的特征，因此很难准确求出静止背景，本文在光流矢量场和配准方法的基础上探讨研究了光流模型、背景模型和基于熵的方法，在动态图像上分离不同的目标与背景，直接检测出运动目标并画出相应的轨迹。针对运动图像的复杂性，本文提出了构建模型知识库的设想。

In this paper, a general formula for information content of random vector field under certain subjective condition is derived.

本文导出了随机矢量场在特定的主观条件下的信息量的一般公式。

Generation of stream surface and interpolation function of vector field, the volume rendering of vector field based on 3D texture mapping.

矢量场基于质量守恒的流面、插值函数的构造及基于纹理的体绘制。3。

Finally, using theφ-mapping topological current theory, we introduce a topologicalcurrent to describe the topological feature of the vector field.

最后，利用φ-映射拓扑流理论，我们引入一个拓扑流来描述矢量场的拓扑性质。

Duan from a general φ-mappingmethod and can be completely formulated by a unit vector field with sin-gularities.

该拓扑流普遍地从φ-映射方法出发，可用带奇点的单位矢量场完全表达。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。