quadric surface
英
美
n. 二次曲面
双语例句
- The curve structure and projective structure of the normal quadric surface; The software of RE in data process, cure restructure are also discussed.
常态二次曲面的曲线结构和射影结构阐明了在软件设计中有关数据处理和曲面重构的功能。 - Application of Moving Quadric Surface in GPS Height Fitting
移动曲面法在GPS高程拟合中的应用 - A new method named quadric surface direct fitting based on normal vectors of measured data is proposed to overcome the current quadric surface fitting method's shortcomings.
为了解决二次曲面拟合算法中因几何参数初值计算方法不精确而导致的求解效率低，甚至失败的问题，提出了基于表面法矢的二次曲面直接拟合算法。 - Skewed symmetry detection of quadric surface solids under orthographic projection exploration of CAI in engineering drawing& to analyse the trend of intersecting lines of two stereoscopic cambers
正交投影二次曲面立体图的斜置对称面检测（英文）工程图学中计算机辅助教学探索&两曲面立体相交趋势分析 - An algorithm of feature surface recognition based on quadric surface fitting and geometry property was presented.
提出了基于二次曲面拟合误差分析和几何属性分析的特征曲面识别算法。 - Two dimensional sensor data processing based on quadric surface fitting theory
基于二次曲面拟合的二维传感器数据处理技术研究 - Applying polynomial regressive method to deal with the experimental data of equal thickness interference can extend the detecting range of this experiment from only spherical surface to arbitrary quadric surface of revolution.
用多项式回归处理等厚干涉的实验数据，可将等厚干涉的检测范围从球面拓展到任意二次旋转曲面。 - Moreover, this method is used in the tangent problem, the general equation of the tangent plan about a quadric surface was obtained.
进而应用于二阶曲面的切平面问题，得到了过给定直线，二阶曲面之切平面的一般方程。 - The simulation and actual measurement experiments were conducted, which suggested that the methods of quadric surface fitting and uncertainty assessment presented be correct.
仿真实验和实物测量实验表明，给出的二次曲面拟合方法和不确定度估计方法是正确的。 - This paper proposes for the first time to use genetic algorithm based on real-number-coding to extract quadric surface.
首次提出利用基于实数编码的遗传算法针对离散数据点进行二次曲面提取。 - First, the paper gives a detail analysis on the quadric surface composed by correlation in two projective planes.
首先，文中着重分析由不重合平面场的异素对应构成二级曲面的问题； - Generally the surface of objects such as mechanical parts is mainly composed of quadric surface, free-form surface and blending surface, which are defined as features in this paper.
实物产品尤其是机械零件的表面通常是由一些可以称为特征的几何曲面组成，这些几何特征曲面主要包括二次曲面、自由曲面和过渡曲面等。 - In this paper, we introduce the formula for circular cross section of quadric surface, correct a mistake in historical documents, and expand the achievement created by our predecessors.
介绍了二次曲面的圆截线平面公式，纠正以前文献中的一个错误，并将前人的成果扩大。 - Application of shepard fitting method based on quadric surface in GPS leveling
基于二次曲面的Shepard拟合法在GPS水准中的应用 - A Method Based Fitting of Moving Quadric Surface with Variable Windows for Detecting Gross Errors in Irregular DEM
基于不同大小窗口的移动曲面拟合法探测不规则DEM粗差的一种方法 - Study on Precision Process in Quadric Surface Convex Mold with NC Machining
二次曲面凸模数控精密加工研究 - To solve the problem of surface parameters comparison deriving from unconformity between measuring coordinates and design coordinates, the method of 3 D quadric surface analysis is introduced and validated in experiment.
为了解决摄影测量中测量坐标系和工件设计坐标系不一致的情况下进行面形参数比较的问题，提出了三维二次曲面的面形分析方法，并在实验中验证其可行性。 - To improve the imaging quality of CCD camera and make the lens small in size, compact in structure, the wide field of view ( WFOV) optical lens with the standard quadric surface and even aspheric surface was designed.
为提高CCD摄像机的成像质量，同时使镜头结构紧凑、小型化，在大视场光学镜头的设计中，引入标准二次曲面和偶次非球面。 - Main contents in relation to the hybrid modeling method are discussed, and some key techniques such as quadric surface feature extraction and blend surface feature extraction are addressed in details.
讨论了混合建模方法的主要研究内容，并研究了二次曲面特征和过渡曲面特征提取。 - High frequency scattering theory, including physical optics, physical theory of diffraction and equivalent electric current theory, were used to calculate the radar cross section of various scattering resources of missiles, such as flat plate, circular cylinder, quadric surface, edge and so on.
综合应用高频RCS分析方法，包括物理光学法、几何绕射理论、物理绕射理论和等效电磁流法等计算了导弹各种散射源如平板、圆柱、二次曲面、边缘等的RCS。 - Computing quadric surface intersection curve is an important operation in computing the boundary representation of a three dimensional object in solid modeling system, and is applied in other geometric processing as well.
计算两二次曲面的交线是立体造型系统计算三维物体边界表示的一个非常重要的操作，同时还可应用在其它的几何处理算法中。 - This paper describes establishment of spatial perspective affine transformation in the orthographic projection, and how to find the line of section of plane with quadric surface and line of intersection of two quadric surfaces by using of the spatial perspective affine transformation.
本文阐述了空间亲似变换在正投影中的建立，以及应用空间亲似变换来求解二次曲面上的截交线和两二次曲面相交后的相贯线。 - This paper presents the contour line equations of central projection of four surfaces widely known in engineering ( revolution surface, elliptic surface, quadric surface, and ruled surface).
本文给出了工程上常见的四种类型曲面，回转曲面、椭圆型曲面、二次曲面及直纹曲面的中心投影的轮廓和轮廓线方程。 - The key algorithms of the extraction and parametric representation of quadric surface and blend surface features are investigated and developed.
研究并解决了从测量数据提取二次曲面特征、过渡曲面特征及其参数化表达的关键技术和算法。 - We explain the ways of surface reconstruction in details, including quadric surface, extruded surface, revolved surface and free-form surface.
文章重点阐述了二次曲面、拉伸面、旋转面、以及一般自由曲面的构造方法。 - In addition, the application of general sweep technique on polyhedron corner rounding, and the intersection line smoothing between two quadric surface, are preliminarily studied in this thesis.
另外，本文还对一般扫描技术在多面体棱角倒圆及二次曲面相贯线间的圆角平滑问题上的应用作了一些初步的探讨。 - Study on Algorithm of Quadric Surface Fitting in Reverse Engineering
逆向工程中二次曲面拟合方法的研究 - With the Lagrange multiplier method, the minimum distance of the center of a circle and a quadric surface was provided and the tangency condition of curve and surface was given.
利用拉格朗日乘子法求解二次曲线和二次曲面之间的最小距离，给出了曲线与曲面相切的条件。 - Aiming at the deficiency of the current fingerprint segmentation method at pixel and the segment limitation of the linear classifier, a new method of segmentation based on quadric surface model is proposed.
针对现有的基于像素的指纹图像分割方法存在的不足，分析采用线性分类器对指纹图像进行分割的局限性，并在此基础上提出了基于二次曲面模型的指纹图像分割方法。 - Realized point cloud segmentation based on quadric surface approach.
本文主要贡献如下：1、实现基于二次曲面逼近的点云模型分割。
英英释义
noun
- a curve or surface whose equation (in Cartesian coordinates) is of the second degree
Synonym: quadric