质心坐标

质心坐标变换及其在纹理映射均匀化中的应用

Barycentric Coordinate Mapping and Its Application in Uniform Texture Mapping

本文在质心坐标系中讨论了分数量子Hall效应的少粒子体系。

The fractional quantum Hall effect system is analysed in the mass centre coordinate .

目的探讨应用高分辨率的MRI对丘脑进行薄层断层扫描以及计算机三维重建技术对靶点定位的价值和临床应用意义；并获得丘脑的MRI质心坐标值和空间立体形态。

Objective To provide target coordinates and imaging of thalamus with serial thin horizontal brain scanning with high-resolution MRI and computerized three-dimensional reconstruction .

介绍一种精确的方法，在质心坐标系中，把量子N体系统的整体转动自由度和内部运动自由度完全地分离开来。

A method without any approximation to separate the global rotational degrees of freedom in the Schrdinger equation for an N - body system completely from the internal ones is presented .

在对激光光斑质心坐标的提取过程中，对比研究了质心法、加权质心法、Hough变换法与圆拟合法。

In the center extraction process of the laser spot , the centroid , weighted centroid , Hough transform and circular fitting methods were studied comparatively .

提出了一种基于SolidWorks的转镜平衡分析方法，该方法利用SolidWorks的质量评估功能得到转镜的质心坐标和中心惯性主轴与旋转轴的夹角以此作为转镜动平衡性能评价指标。

A balance analysis method of rotating mirror is proposed based on SolidWorks , Which utilizes the quality assessment function of SolidWorks to get the centroid coordinates and the angle between rotation axis and center inertia main axis as the criterion of dynamic balance .

给出的水分子基态势能函数，在质心坐标系中推导了水分子的正则坐标与共轭正则动量和Hamilton正则方程，应用辛格式计算了水分子的经典轨迹和能量，并与Runge-Kutta法做了比较。

Murrell et al , the canonical coordinates and canonical moment as well as Hamilton canonical equations in mass center coordinates have been deduced , classical trajectories and energy of H_2O molecule have been computed . The computed result is compared with the result computed by Runge-Kutta method .

再利用共振群方法（RGM），在质心坐标系下抽取Νη两集团之间的非定域相互作用势，分析势的特点，然后计算结合能，研究Νη是否存在束缚态。

Then use the resonant group method ( RGM ) , extract the non-local interaction potential between the two groups in the space coordinates , by Analyzing the characteristics of the potential , and calculating the binding energy , study the existence of bound states .

质心坐标系在物理学中的应用研究

The application of the center of mass coordinates to the physics

质心坐标系的牛顿-欧拉动力学方程

Newton-Euler dynamics equations for coordinate frame at center of mass

采用质心坐标系讨论一维碰撞问题。

In this paper , One-dimension collision has been discussed in mass-centre coordinate system .

质心坐标系中的两体问题

Two-particle Systems And Center of Mass Coordinate Systime

对液罐汽车部分装载并直线制动时，罐内液体的质心坐标和制动稳定性进行分析讨论。

The centroid coordinates of liquid tank and the braking stability of a partly loaded straight running the truck are discussed .

再根据空间力系质心坐标公式和力矩平移定理求得整车的动力学参数。

Then obtaining the whole car dynamics parameters based on mass center coordinates formula of space force system and torque translation theorem .

用质心坐标系分析了二体问题的运动方程，并用质心系讨论了两个粒子间的弹性碰撞问题。

This paper analyses the two body problem of kinematical equation and discusses the elastic collision between two particles in the center of mass system .

在此基础上获得目标的面积、周长和质心坐标等参数，为图像目标识别做好准备。

Consequently , the object 's area , perimeter and coordinate value of center of mass are obtained , which are necessary for target recognition .

选用质心坐标系讨论两体问题，给出有关两体问题的动力学方程并展开讨论，同时又导出三个重要的物理量在质心坐标系中的表达式，最后将所得结果应用于三例具体问题。

In center of mass coordinate system , the equation of motion of two-particle systems is given out , and some important physics quantities are also discussed .

通过把实验数据从实验室坐标系转化到质心坐标系，得到反应产物在不同质心角度下的平动能分布和角度分布。

Data measured in the laboratory frame were converted to that in the center-of-mass frame to obtain product kinetic energy distributions and angular distributions in the center-of-mass frame .

深入研究了灰度噪声、量化噪声对目标特征图像的影响及其误差模型，并由此建立了目标特征图像质心坐标提取误差模型。

Based on the study of the influence of the quantification noise and the gray level noise on target feature image , the error model of the target feature image centroid coordinates is built .

有些问题若选用质心坐标系，用这定理求解会更加简便。

Examples are given to show that it is more convenient to solve problems by these laws and that it is easier and simpler to work out solutions especially by the laws in center of mass system .

在对二值化图像扫描形成目标块的过程中，标记各个目标像素，记录目标的边界点，得出分割目标的面积、周长、质心坐标。

During scanning binary image to form object region , each object pixels will be labeled and object boundary points will be recorded , thus the area , circumference and centroid coordinate of the segmented object can be obtained .

粗粒化势和点多极势在全原子惯性坐标定义的质心坐标系里合并在一起。具体过程，构建新力场，取出成对分子多组不同构象。

The Gay-Berne and point multipole potentials are combined in the local reference frame defined by the inertial frame of the all-atom counterpart . The specific process is this , firstly builds the new force and selects many pairs of different molecular conformation .

得到太阳光斑质心坐标与图像中心坐标的偏差，驱动水平和俯仰两路步进电机，使太阳光斑始终在图像中心位置，从而使太阳能板对准太阳。

The centroid coordinates and image coordinates of the center of the deviation , drive the horizontal and pitching two stepper motor , so that the sun is always at the center of the image spot position , so that the solar panels toward the sun .

通过视觉传感器获取焊接区熔池图像，抽取图像质心坐标并构成状态向量，建立一种基于图像质心的状态方程和位置测量方程。

The centroid of weld pool image from a visual sensor is extracted as the measurement eigenvector . The evolution of the weld position data from the weld pool images can be described through an appropriate state equation and a measurement equation which are based on the image centroid .

而在双电子量子点中，首先把两个电子的坐标化成质心坐标和相对坐标，由于存在电子电子库伦相互作用，哈密顿量的解析解无法得到，所以把库伦相互作用作为微扰来处理。

In the condition of double electrons , the coordinates of the electrons can be translated to mass center and relative coordinates firstly . Because of the electron-electron coulomb interaction , the analytical solution of Hamiltonian can not be achieved . So we regard the interaction as the perturbation .

采用了一种基于HSV模型，应用H参数特征值来识别特征物体并获得其质心点坐标的方法。

A HSV model based method which has been used for discerning feature objects and capturing the coordinate of their center using H-parameter Eigen value has been achieved .

以分布式InSAR为例，着重研究了从地心惯性坐标系到卫星质心轨道坐标系的转换方法，详细地推导了具体的转换公式。

Taking the distributed InSAR as an example , this paper lays a strong emphasis on the research of the coordinate transformation methods from the inertial coordinate system to the centroid orbit coordinate system , and deduces the idiographic formulas of them in detail .

在摆位误差校正的研究中，详细讨论了刚性配准和肿瘤靶区质心与坐标系原点重合问题。

In addition we discussed the coincidence between tumor target centroid and the origin of the coordinate system in detail .

其中基于视频脉冲捕捉、计数技术提取B超探头质心三维坐标是课题的创新之处。

3D coordinates pick-up of the detector centroid by the technique of video-pulse catch and count is the innovation of the task .

然后采用区域统计、参数识别、噪声区域去除以及聚类分析等手段进行目标特征识别，提取出棒材的质心点坐标作为特征；

Object centroid as the features was computed by means of regional statistics , parameter recognition , noise region removal and cluster analysis .