Family of confocal centred conics According to the restriction of the generatrix line, Bertrand surface can be constructed with the Bertrand curve with broad sense group. 共焦有心二次曲线族按照母线的约束,形成广义白川德曲线族,进而构造出白川德曲面。
Conics Projective Geometry and Application of the Nature of the Discussion 射影二次曲线的几何性质讨论及应用&二元二次多项式因式分解的理论
The parallel-connection and variable-speed operation characters of the centrifugal pump groups are studied by conics fitting of the character curves in the high efficiency area. 通过对离心式水泵高效工作区的性能曲线进行二次拟合,分析了离心式水泵机组并联调速运行特性。
Drawing the Conics by Use of Balanced Bridge 利用平衡电桥绘制二次曲线
The Study on Calculating and Interpreting the Optical Flows of Conics 二次曲线光流计算和解释研究
The Estimative Algorithm of Rotational Motion Parameter Based on the Correspondence of Conics in the Serial Image 基于序列图像中二次曲线对应的纯旋转运动参数估计算法
Contour-Parallel Tool-Path Planning of Free-Form Surface Homothetic Conics and Similar Conics 自由曲面环切刀位规划平面曲线的位似与相似
Finally, all these projected points are verified to see whether they lie well on a plane. If it does, re-project the conics onto the plane. 最后判断投影点是否接近于同一平面,如果是,则将二次曲线重新投影到该拟合平面;
The Perspective Corresponding of Conics on Quadrics and Method of Fixing the Center of Perspectivity 二次曲面上二次曲线的透视对应及透视中心的确定
A Unified Method for Conics Based Stereo Vision 基于二次曲线的立体视觉统一方法
The Application of Pencil of Conics in Solving System of Equations 二次曲线束理论在解方程组中的应用
THE GRAPHICS OF THE INTERSECTIONS AND COMMON TANGENTS OF TWO CONICS A Method of Drawing Quadric Curve Tangents 两二次曲线公有点和公切线的图解问题二次曲线的切线作法
For this reason, we introduce a practical representation of quadric surfaces, and on the basis of that, algorithms of intersection points between quadric surfaces and several conics, fourth degree nonplanar space curves constructing their boundaries are developed. 为此,对一种实用的二次曲面表示方法&几何法进行了深入研究后,给出了构成二次曲面轮廓的几种二次曲线和空间四次曲线与二次曲面交点的求法。
Apply the theory of pencil of conics to reveal the geometric significance of simultaneous equations of second degree with two unknows. 应用二次曲线束理论揭示解二元二次方程组的几何意义。
Camera Calibration with Conics Fitting and Circular Points 利用二次曲线拟合和圆环点进行摄像机标定
The new method defines its objective function based on algebraic distance and obtains six basic conics with six different constraints. By adding certain weights to coeffecients of six basic conics, we can get the final fitting conic. 新方法基于代数距离定义目标函数,在六种不同约束条件下得到六条基本二次曲线,最终的拟合二次曲线由六条基本二次曲线系数加权平均产生。
Factoring integers with conics 用圆锥曲线分解整数
Fast, Robust and Exact Extraction of Straight-Lines and Conics 直线和二次曲线的实时精确鲁棒提取
The edge points with single pixel width have been obtained by using of the algorithms of edge detector, edge thinning and contour following from consecutive images, and the edges obtained are represented as conics. The computation of the optical flows of conics has been accomplished. 采用边缘检测、边缘细化和轮廓跟踪等技术,获得了具有单像素宽的边缘点集,提出用分段二次曲线描述边缘,计算得到了二次曲线的光流。
The instrument which are used for drawing the circle and ellipse are available, but there is no yet the instrument used for drawing all the conics including circle, ellipse, parabola and hyperbola. 圆和椭圆的绘图仪器已有产品,但还没有一种绘图仪器可以绘制全部圆锥曲线(圆、椭圆、抛物线和双曲线)。
Conics is a difficult section in the Analytic Geometry for senior high school students. 圆锥曲线是高中生解析几何学习中的一个难点。
Automatic identification method of conics is studied based on the curve geometric invariants. 讨论了基于二次曲线不变量的圆锥曲线特征自动识别方法。
Based on the research, there are some suggestions as follow: ( 1) Adjusting the Curriculum Standard: to explain the main curriculum aims of analytical geometry; to consider the conics as compulsory; to increase the main content of coordinate commutation. 在研究的基础上,有如下初步建议:(1)课程标准修订:应把圆锥曲线列为必修课程。