In this paper , bp neural network is used to mending the insufficient data during the measuring procedure of digitalizing geometric feature of curved surface 在本论文中，采用bp神经网络，对曲面几何特征数字化测量过程中产生的缺损数据进行修补。
On the basis of concrete analysis of the geometric feature parameters of the gauge , the measuring theory of the computer vision test system is suggested 具体地分析了指针式仪表的几何特征参数，在此基础上提出指针式仪表视觉检测系统的测量原理。
The irradiation time , the wavelength and intensity of visible irradiation light and many other factors have a great influence on the geometrical characteristics of flake silver powders 可见光的辐照时间以及波长和强度等对所得片状银粉的几何特征影响较大。
According to the measuring appliance geometry characteristic and the relative position between reading - pointers and the calibration red pointers examine the effective pointers ’ central position 根据仪表的几何特征和用于读数的指针和定标红色指针的相对位置,检测出有效指针的中心位置。
Chapter3 . the kekule structures count on swnts and some fullerenes . this chapter introduces the swnt ' s mathematical model and its geometry characters in details 本章详细介绍了单壁碳纳米管的数学模型和几何特征，对其上的kekule结构计数提出了直接枚举法和kasteleyn方法的可视化设计。
Foreground area is extracted by adaptive threshold method , the object is searched by extending the connected components extraction method , the object is recognized based on the geometrical character 以自适应门限值提取前景区域,通过扩展的连通分量提取算法实现了目标的快速搜索,最后基于几何特征对目标加以识别。
Abstract : the effects of dimension , symmetry and tangling or nesting features on assemblability are discussed , and the recognition methods from cad model of these geometric features are given 文摘:阐述了零件的外形尺寸、对称性以及嵌套和缠绕性等几何特征对零件可装配性的影响，并探讨了这些特征的自动识别方法。
Face recognition based on the geometric feature face recognition based on the geometric feature expresses the human faces by vectors of geometric feature , and identifies the faces by the idea of clustering in pattern recognition 基于几何特征的人脸识别方法将人脸用几何特征矢量表示，利用模式识别中层次聚类的思想设计完成识别分类器。
A method of adding process feature in geometry feature model by using 3d cad software , solid edge is presented . in this way full feature modeling is realized providing condition for integration of capp and cad 提出了一种借助三维cad软件solidedge界面在零件几何特征模型上添加工艺特征的方法，实现了完全特征建模，为capp与cad的集成创造了条件。
The design reuse technology based on feature has been researched . the domain feature and management feature in welding fixture design have been represented . more over , the tools for the features reuse have been realized ( 4 )研究了基于特征的设计重用技术,应用该技术封装了焊接夹具设计中的几何特征和管理特征,开发了航空焊接夹具特征重用工具。
