Chinese translation for "cross ratio"

交比，非调和比，重比。

Example Sentences:

	1.	The cross ratio he called anharmonic ratio . 他把交比叫作非调和比。
	2.	Desargues proved that the cross ratio is the same for every section of the projection . Desargues证明了投射线的每个截线上的交比都相等。
	3.	Desargues proved that the cross ratio is the same for every section of the projection Desargues证明了投射线的每个截线上的交比都相等。
	4.	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 摘要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。
	5.	On the stage of describing the shape of airplane and extracting feature , we derive five - coplanar - point invariant from the basic projective invariant - cross ratio , and resolve the problem of stabilization of five - coplanar - point when there is three points are nearly collinear 在对飞机外型提取特征进行描述的阶段，首先从基本的射影不变量交比不变量出发，推导出了平面五点不量，并解决了当有三点接近共线时不变量不稳定的问题。
	6.	In the self - calibration scheme , the thesis emphasizes the accuracy of camera intrinsic and extrinsic parameters . we presents an accurate f method based on corresponding point adjustment . the method adjusts coresponding points according to the fixedness of projective transformed cross ratio , then calculates f matrix accurately through linear and non - linear methods . when computing intrinsic parameter , a matrix , we simplify the step , and stress on the two important parameters of a . the result will be getten through solving kruppa equation based on svd decomposition . in order to compute extrinsic parameters , we use linear method to get initial r and t , then apply non - linear method to accurate them 提出了基于匹配点调整的f求精方法，先根据摄影交比不见性对手工选择的匹配点进行调整，再用线性、非线性结合的方法求精f矩阵；在计算内部参数a中，进行了一定的简化，把重心放在a中重要的两个参数上，用svd分解法计算kruppa方程；在计算外部参数时，首先用线性法求解r 、 t ，然后再用非线性法迭代求精。
	7.	Based on projective geometry , the research works about 3d invariance ' s extraction and application have been done in this thesis as following : ( 1 ) the basic theories and concepts in projective geometry are systematically summarized . it includes : the camera models of perspective imaging , projective collineation , cross ratio , a simple compare about invariance ( invariant ) among some geometry transformations , fundamental matrix , epipolar and epipolar line in epipolar geometry , and so on . ( 2 ) the calculation methods for 2d projective transformation are extended from points to multi - element , which includes points , lines , points lines and so on , to get the relationship between two projective planes 基于射影几何理论，论文围绕3d不变特征的提取和应用进行了如下的研究工作： ( 1 )系统总结了射影几何中的若干基础概念，包括：透视成像的相机模型、射影对应、交比不变量、基于不同几何变换下的不变量的简单对比、对极几何中的基础矩阵、对极点、对极线等。

Similar Words：

"cross rate, arbitrage rate" Chinese translation, "cross rate,broken" Chinese translation, "cross rates" Chinese translation, "cross rates of exchange" Chinese translation, "cross rates,break in" Chinese translation, "cross reacting antibody" Chinese translation, "cross reacting antigen" Chinese translation, "cross reacting material" Chinese translation, "cross reacting material negative" Chinese translation, "cross reacting material positive" Chinese translation