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交比的英文

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"交比"怎么读用"交比"造句

英文翻译手机手机版

  • anharmonic ratio; [数学] crossratio; double ratio

例句与用法

  • The cross ratio he called anharmonic ratio .
    他把交比叫作非调和比。
  • 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。
  • 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。
  • In this method , the camera calibration grid for estimating the distortion parameters is easy to get and there is no need to fix the camera when taking pictures
    利用交比不变的性质,拟合全视场的无畸变的虚拟网格,得到图像点的偏差,从而计算出畸变系数。
  • A separated - parameter method is proposed to calibrate the structure parameter . a vanishing line method is proposed to calibrate the normal vector of light plane and invariability of cross - ratio is proposed to calibrate the baseline length
    并提出一种参数分离的方法对传感器进行了标定,采用消隐线法标定激光平面的法矢量,利用交比不变原理标定激光平面的基线长度。
  • 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。
  • 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。
  • The dissertation is mainly including four section : the first is the experiments done in the tank , which will supply the reliable information of imaging data ; the second is image edge detection by the use of the art of the zernkie moments , which is used to detect the liner and threaded edge of the object , the third is the underwater camera calibration technique , the forth is automatic positioning the location of the camera by used of the art of cross - ratio , the result of which is satisfied
    本文工作分为四个部分:第一部分是水槽实验部分,它为后续的工作提供了可靠的图像数据信息;第二部分是基于zom距的直线、曲线边缘提取技术及相关的与处理技术;第三部分,水下摄像机标定技术研究,基于改进的tsai算法,采用逐步分解的标定策略。并探讨了一种相对简单的、灵活的标定技术;第四部分是摄像机定位技术研究,采用具有平移不变性的交比进行摄像机定位,仿真试验的最大误差不超过2 ,效果还是令人满意的。
  • 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。
  • For bilateral symmetry objects , the techniques on symmetry - point detection and symmetry - axis extraction are presented based on harmonic conjugation relationship . for rotated symmetry objects , the techniques on rotated units description and rotated symmetry center extraction are presented based on center invariants of objects . further more , by using 3d invariants and 2d projective transformation , an approach to recover shape from part symmetry objects is realized on some conditions
    ( 3 )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;利用调和共轭关系,提出了一种针对左右对称型目标的对称点检测和对称轴提取的算法;利用交比关系构造了目标的形心不变量,提出了一种针对旋转对称型目标的旋转对称单元判定、旋转中心提取的算法;进一步利用3d不变量和2d射影变换,实现了一定条件下的对称性目标的形状恢复技术。
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百科解释

数学上,复平面上四点的交比是
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