cross ratio的例句大全

The cross ratio he called anharmonic ratio.

他把交比叫作非调和比.

At the same time the feature point coordinates on the planar target were achieved with cross ratio invariability theory, then structured light parameters was calibrated.

同时利用交比不变性原理获取平面靶标上的特征点坐标，完成了结构光平面参数的标定。

Cross ratio and element at infinity are two important concepts with projective geometry and primary tools in considerate projective property of figures.

交比和无穷远元素是射影几何中的两个重要概念，它们是探讨图形射影性质的主要工具。

There will be the case that the points do not match but they have the same cross ratio when calculated the invariants using the cross ratio.

同时在利用交比作为不变量进行特征点的匹配，会出现误匹配现象，即实际上并不匹配的点交比值却相等。

The cross ratio invariance of interaction system

相互作用系统的交比不变性

The cross ratio of rational quadratic b-spline curves

比斜法有理样条插值有理二次B样条曲线的交比性质

The Definitions of Cross Ratio of Four Lines in a Line Pencil

线束中四直线交比定义的讨论

It overcomes the disadvantages of existing distortion calibration approaches. Assumed only with one order radial distortion, image coordinates of only 4 special collinear points are needed as well as the cross ratio of them.

该方法利用了透视投影中的交比不变性质，在畸变模型为一阶径向畸变的情况下，只需要空间共线的4个点的图像坐标和其交比，建立一元二次方程即可标定畸变参数。

Algorithm of space plane parameters based on cross ratio invariance

基于交比不变性的空间平面参数算法

In the calibration of the system, a plan based on the principle of cross ratio invariance in algebraic projective geometry was used to calibrate the coded light planes.

在对编码投影光平面的标定过程中，提出利用代数射影几何中的交比不变原理对其进行标定的方案，并论述了标定原理。

The geometric characteristics of 2D symmetric objects' in perspective images are lucubrated. The cross ratio of four lines is applied to describe feature points on object silhouette.

深入分析了2D对称性目标透视成像的几何特点，将共点四线交比用于目标轮廓上的关键点的特性描述中；

Uncertainty Analysis of Constructing Calibration Points Based on Invariance of Cross Ratio A new approach for lens distortion calibration is presented, which utilizes the cross ratio invariability of perspective projection.

交比不变获取标定点的不确定性分析在分析目前的畸变参数标定方法优缺点的基础上，提出了一种能克服现有技术缺点的简单快速的镜头畸变参数标定方法。

A camera calibration method with co-line points is proposed, in which distortion center is located according to cross ratio invariability, and then distortion coefficients are calculated based on a line's central projection is a line.

提出一种用共线点列标定摄像机镜头畸变参数的方法，先根据交叉比不变性确定畸变中心，再利用直线的中心投影仍为直线这一性质确定畸变系数。

Then, combining a flexible arm measuring machine and a standard ball with space round fitting algorithm, the presented model parameters are calibrated. Also, based on principle of cross ratio invariance, a fast calibration approach is presented. 4.

使用柔性臂测量机结合空间球拟合、空间圆拟合算法对检测系统测量模型参数进行标定，同时提出了一种基于空间几何交比不变性原理的检测系统测量模型参数快速求解方法。

A group of projective invariants was derived based on the cross ratio of five coplanar points, and used to recognize planar polygons. Experimental results show that the invariants have projective invariance and can be used to recognize planar polygons effectively.

利用共面五点的交比，导出一组用于识别平面多边形的射影不变量，用这组不变量实现平面多边形的识别，实验结果表明，这组不变量具有射影不变性，可以有效地识别平面多边形。

A new calibration method of structured light system using a coplanar object is proposed based on invariance of cross ratio.

在交比不变原理基础上，提出了基于共面靶标的线结构光标定方法。

In the second stage, the one order radial distortion parameter is computed by using cross ratio invariability.

根据透视投影的交比不变性解算一阶径向畸变参数；

[ 1] In the cross-country ski race, the body requires both aerobic metabolism for energy, but also need to anaerobic glycolysis, in the energy supply ratio, the proportion of aerobic metabolism for energy is higher than the proportion of anaerobic metabolism for energy.

[1]在越野滑雪比赛中，机体既需要有氧代谢供能，又需要无氧糖酵解供能，在供能比例上，有氧代谢的供能比例要高于无氧代谢的供能比例。

Experimental research of ratio of project for encasing material in the cross-sectional imaging measurement

层去图象法中封装材料配比方案实验研究

Previous formulae [ 1,2] took the web ratio factor into the coefficient of length, regarding web-tapered member as a uniform one with the same cross-section of the small end.

以往的公式[1,2]采用将楔杆等效为以小端截面作为等直杆的截面、将渐变的影响计入计算长度系数的方法；