查询词典 polar line

Accoring to the polar theory of conic section, the characteristics of geometrical graphics concerning the conic section is discussed from following three aspects:the conbination of Point and line, harmony of point range and pencil of line , trace of point and enveloping of straight line.

本文根据二次曲线的配极理论，从点、线的结合性，点列和线束的调和性，点的轨迹和直线的包络三方面研究与二次曲线有关的几何图形的性质。

The method comprises the following: a step of calibrating a camera, which is to utilize a Taylor series model to calibrate an omni-directional vision sensor so as to obtain internal parameters of the camera; a step of obtaining epipolar geometric relation, which comprises the steps of calculating an essential matrix between binocular omni-directional cameras and extracting the rotation and translation component of the cameras; a step of correcting an outer polar line, which is to correct the outer polar line of a shot omni-directional stereo image so as to allow a corrected polar quadratic curve to coincide with an image scan line; and a step of three-dimensional reconstruction, which is to carry out feature point matching to the corrected stereo image and calculate the three-dimensional coordinates of points according to matching results.

该方法的步骤包括：相机标定：利用泰勒级数模型对全向视觉传感器进行标定，得到相机内参；对极几何关系求取：包括计算双目全向相机之间的本质矩阵，并从中提取相机的旋转和平移分量；外极线校正：对所拍摄的全向立体图像对进行外极线校正，使校正后的极二次曲线与图像扫描线重合；三维重建：对校正后的立体图像对进行特征点匹配，根据匹配结果计算点的三维坐标。

IHT is make used of to proceed line edge fitting in the actual engineering. The auto-adaptable image edge detection method is applied to detect image edge in real project, and the region of image edge detected is limited within 1 pixel. IHT is also applied to fit line edge. Comparing with MHT, the result of IHT indicates its speed quick, the accuracy high, and anti-jamming-quality strong, exactly said that the accuracy of IHT fitted line is less than 0.1 pixel for polar distance and less than 0.01deg for polar angle.

自适应边缘检测方法被应用于检测实际工程的图像边缘，检测到的边缘区域在亚像素之内；修正的Hough 变换算法也被运用于相应工程的直线拟合，与传统的Hough算法相比，结果表明其速度更快、精度更高，抗干扰能力更强，其拟合直线的极径精度可达到0.1个像素，极角精度可达0.01度。

A fitting algorithm based on the principle of least square and polar line geometric properties of ellipse is described.

近年来越来越多的实验和数值计算显示，采用椭圆形前缘可以明显改善叶片的气动性能。

In order to reconstruct them accurately, a method for fitting the ellipse based on the principle of conditional least square was applied at first, and then its fitting result was used as an initial value to find a more precise result according to the polar line geometrical properties of the ellipse.

为了实现精确建模，本文首先运用一种基于带约束的最小二乘方法对数据点进行拟合，然后用拟合的结果作为初值，根据椭圆的极线性质进行更精确地求解。

Using the relations between harmonic conjugation elements,we can determine the relations between polar point and polar line more widely.

度量几何中圆的切割线之间所确定的数量关系，推广到射影几何里一般二次曲线中，利用调和共轭元素之间的关系，更广泛地确定了极与极线的相互关系，着重介绍了二次曲线的度量性质与射影性质的内在联系。

I Division since its establishment in 1998, has been committed to world-renowned brands of India-binding equipment refurbishment, maintenance, the sale, such as: STAHL folding machines, MBO folding machine, MARTINI plastic installed, the lock-line, riding a nail Production lines, plastic production line equipment, POLAR, WOHLENBERG Cutter, KOLBUS shell of the aircraft, and other hard shell on the paperback category-binding machines.

我司自1998年成立以来，一直致力于世界知名品牌的印后钉装设备的翻新、维修、买卖，例如：STAHL 折页机、MBO折页机、MARTINI胶装机、锁线机、骑钉生产线、胶装生产线、POLAR、WOHLENBERG切纸机、KOLBUS书壳机、上壳机等精装平装类钉装机器。

A novel three-dimensional localization method is proposed. Firstly, the tomato effective centric spots are obtained from the left multi-sensor fusion image and the right multi-sensor fusion image. Then, being looked as symmetries, image pairs other point to point correspondences are searched from two directions by pixel neighbor area correlation values by using the polar line restraint, the unique restraint and the disparity gradient restraint.

即从双目定位的几何模型出发，在双目匹配搜索中，提取多源传感融合图像的番茄凸壳有效形心点，采用极线约束、唯一性约束进行立体视觉图像的特征点及其邻域灰度相关的双向匹配，利用体视原理获取唯一被测目标的空间坐标。

Nephrometry Score consists ofadius,xophytic/endophytic properties of the tumor,earness of tumor deepest portion to the collecting system or sinus,nterior/posterior descriptor and theocation relative to the polar line.

结果：肾脏散色比浊法评分由下列部分组成：半径（以肿瘤最大直径作为衡量肿瘤大小的依据），肿瘤的外生/内生特性，与肿瘤最深处接近肾集合系统或肾窦的距离，对肿瘤前方/后方部位的描述以及与极线相关的定位。

We performed a simulative test, which confirms that wavelet analysis can separate annual wobble and Chandler wobble. Our results show that this method can be used in astronomical geodynamies effectively. This paper is divided into two parts. The first is about statistic characteristic of polar motion. Polar motion includes secular motion, long period fluctuations, Chandler wobble, annual wobble and high frequency wobble. The secular motion is 3.4mas/year and towards 760W meridian. Long period fluctuations have difference periods in x-axis and y-axis. They are 31.7-year and 24-year in x-axis and 28.5-year and 22.9-year in y-axis. These 2~? decades fluctuations have an amplitude of about 30 mas , and are very nearly linearly polarized, with the observed motion of pole being almost entirely along a line between 360E and 1440W. There is a 55.4-year wobble whose amplitude is 9 mas. The amplitude of the interannual fluctuations is about 4? mas. The amplitude of long period fluctuations decreased after 1970. The annual wobble is a steady wobble. It retrograde wobble is only 1/20 of prograde wobble in amplitude.

本文的工作主要分为两部分：第一部分是通过分析POLE97序列，我们对极移的统计特性有了一个较全面的认识，极移主要包括趋势项、长周期项、Chandler项、周年项和高频项：趋势项的方向是西经76°，速度为每年3.4mas；长周期项中Markowitz 项在X、Y两个方向有不同的周期，它们分别是：X方向的两个周期是31.7年和24 年，Y方向的两个周期为28.5年和22.9年它们叠加在一起是一个线偏振运动，最大振幅约为30mas，偏振方向在西经144°和东经36°之间；极移的长周期波动中还存在一个 55.4年周期的圆周运动，振幅约为9mas；十年尺度变化的振幅在4～6mas之间，在Y 方向十年尺度的成份比较多，它们的周期在X方向和Y方向不是对应的；从七十年代年开始长周期变化的振幅明显降低；周年项是一个振幅稳定的摆动，在X、Y两个方向的振幅略有差别，逆向运动振幅大约为顺向运动振幅的1/20；Chandler摆动的振幅自1900年以来经历了几次较大的变化，其中包括1915年和1955年两次极大值，振幅分别达到0&。25和0&。28，以及1925～1940期间小于0.09的过程，Chandler项在X、Y 两个方向的振幅几乎完全相等，其逆向运动振幅不到顺向运动振幅的1/50。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了