1) normal vector
法矢
1.
Point Cloud-Nearest-Neighbor Search and Normal Vector Estimation Relative Algorithm in Reverse Engineering
逆向工程中点云邻域搜索及法矢估算相关算法研究
2.
Based on above mentioned,it is quite convenient to compute point vector and normal vector.
复杂形状零件的几何建模是数控编程的首要环节,选择合适的曲面造型方法有利于刀位计算和数控加工编程;本文采用三次B样条曲线为基础的双三次B样条曲面造型方法,并给出了其矩阵表达式,在此基础上能十分方便地进行点矢和法矢计算;针对该造型方法,还给出了三轴数控加工中的刀位数据计算方法。
2) Normal
[英]['nɔ:ml] [美]['nɔrmḷ]
法矢
1.
This paper presents a novel triangulation algorithm based on the normal information of the surface and the Delaunay triangulation algorithm.
借助于曲面上的法矢信息和三维Delaunay三角剖分算法,该文给出了一种新的散乱点三角剖分算法。
2.
This thesis studies surface extracting and especially focus on the estimating of the normal .
重点研究了基于离散点云的法矢曲率精确估算、二次曲面提取和拉伸面、旋转面提取等内容。
3) normal vector
法向矢量
1.
The Median Theorem will be applied to determining the normal vector of the point on parabola and then using the technology of tip compensation to measure the parabola accurately.
确定抛物曲线面上所测量点的法向矢量,启动测量针半径补偿作精密测量,使用DEAPPL语言设计程序组,阐述进入CAD/CAM中的数据文件组生成,探讨等距值d对测量精度的影响,在测量机上快速完成二维曲线的测绘和检验,设计的程序组通过标准球实验,测量精度高,除能完成抛物线检验外,还能用于其它精密二维曲线扫描。
2.
In this paper, first introduces about normal vector and then deals with how the stylus regulating automatically its own level on contact complex surface and holds constant level with nominal deflection.
首先介绍了法向矢量在仿形扫描中的作用 ,然后提出了名义偏倾值 DN 的概念 ,及引入名义偏倾值 DN 后在解决扫描中脱模的原理及实现 ,最后介绍了仿形加工及数字化在模具加工中的差异和应注意的问题。
3.
Our method uses object surface normal vectors to obtain vector distances between 3D objects.
本文提出了基于Ｂ－Ｒｅｐ的计算三维物体间距离的方法，即利用物体的表面法向矢量直接计算三维物体间的定向距离。
4) vertex normal vector
顶点法矢
1.
Based on the improvement of Taubin s discrete curvature estimation method of triangular mesh by the adoption of area and angle weighted triangle vertex normal vector calculation formula and triangle centroid weights, a novel algorithm for triangular mesh regularization is presented.
采用面积夹角加权的三角网格模型顶点法矢及三角片质心权值对Taubin的三角网格模型离散曲率计算方法进行了改进,在此基础上提出了一种新的三角网格模型优化调整方法。
2.
A new formula for the calculation of mesh vertex normal vector is presented.
本文首先提出了一种新的网格模型顶点法矢计算公式 ,该公式采用网格模型中三角片面积与顶角角度综合加权 ,可同时反映三角片面积与顶角角度对顶点法矢的影响。
3.
A novel formula for the estimation of triangular mesh vertex normal vector is presented.
给出了一种新的面积角度加权的三角网格模型顶点法矢计算公式,在此基础上对Taubin离散曲率计算方法做了改进,采用质心距离权重代替面积权重,提出了新的离散曲率计算方法。
5) vector method
矢量法
1.
Application of high slope deformation vector method in Lijiaxia project;
高边坡变位计算的矢量法及在李家峡工程中的应用
2.
The analysis of static force in dynamic statefor aircraft landing gear using base vector method;
用基底矢量法进行飞机起落架动态静力分析
3.
Application of Vector method in problems of mathematical solution;
矢量法在数学求解问题中的应用
6) pattern search method
模矢法
1.
This paper presents an accelerated derivative-free algorithm for unconstrainged optimization, which is based on traditional pattern search method.
本文构造一个求解非线性无约束优化问题的免梯度算法,该算法基于传统的模矢法,每次不成功迭代后,充分利用已有迭代点的信息,构造近似下降方向,产生新的迭代点。
补充资料：矢人盘
矢人盘 西周晚期著名青铜器。见“散氏盘”。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条