Based on the characteristic of architectural ichnography and criterion of architectural design fires prevention , the recognizing identification method and main program based on dxf format is proposed 在研究了建筑工程图表示特点和建筑设计防火规范的基础上，给出了基于建筑工程矢量图形文件（ dxf文件）的几何特征识别方法，并给出了识别部分的主要程序。
A new mapping method , which is based on the geometric characteristics of the gamut of monitor and printer , is also presented . the method improves the accuracy of the color reproduction and reduces the consuming time 提出了基于色域几何特征的裁剪匹配算法，通过有效地利用色域几何特征，提高了颜色再现精度，同时减小了对图象进行匹配处理所需的时间。
2 ) research tolerance analysis modeling technique ; discuss one kind of vector loop based assembly tolerance analysis model , which takes fully account of dimension tolerance , geometric feature tolerance and kinematics effects 2 )研究公差分析建模技术，讨论一种基于矢量环的，包含产品零部件的尺寸公差、几何特征公差以及运动学影响的装配公差分析模型。
According to the geometrical characteristics of the transmission line and the theory of perspective projection , a stereo vision method based on single camera is presented to detect the orientation and position vector of the power transmission line 结合输电线的几何特征和摄像机成像原理，提出了一种基于单摄像机的立体视觉方法来确定输电线的位置和姿态。
Aiming at a robust and adaptive dla approach , the authors first manage to find a set of representative filters and statistics to characterize typical texture patterns in document images , which is through a visual similarity testing process 虽然在之后的研究中也引入了聚类算法决定现场参数，但更多是用于分析二值图像上的几何特征，在图象质量较差时不适用。
First , the skin color model is used to detect human face , then each candidate region will be evaluated by geometric feature of face , finally the appropriate features by singular value decomposition will be passed to the svm classifier for the final decision 算法首先利用肤色模型进行人脸粗检，然后根据人脸几何特征进行筛选，最后通过奇异值分解输入支持向量机分类。
At first , the principle of this method , which is using the nonlinear mapping capability of bp neural network to study and memory the geometric feature of the object surface , and to mend the insufficient data for curved surface , is described 首先，阐述了数据修补的方法原理，即利用bp神经网络非线性映射功能，学习并记忆零件曲面的几何特征，对缺损数据进行修补。
The application of part geometry feature model on the designing and production is analyzed synthetically and based on it , inspecting process is integrated with the part geometry feature and the basic idea of part teaching is established . 2 对零件的几何特征模型在设计和生产中的应用进行了分析，并在此基础上将零件的几何特征和零件的检测特征相结合，确定了零件示教的基本思想。
