直线的投影

对于地球极表象为直线的投影，本文运用对偶变换和广义轴位变换，得出了它们的几种新款式。

This paper obtains some new types by using dualistic transformation and generalized transformation of axis , the projections in straight line for earth pole .

归纳了在二面投影体系、三面投影体系中一般位置的等倾角直线的投影特性，分析出作图的一般规律，介绍了它们在相关学科的应用。

This paper summarizes the projection character of general oblique line with equal dip angles to two plane projection system and three plane projection system , analyzes general laws of drawing them , and introduces its application in descriptive geometry and other subjects .

平行直线束的投影平行或相交于一点；

Parallelline should be intersect at one point or still parallel .

地球极表象为直线的再投影法

Method of Reborn Projection in Straight Line for Earth Pole

三交错直线的辅投影

Auxiliary Projection of Three Skew Lines

提出一种矢量压缩编码新方法&矢量线上投影法，它将输入矢量用它在某条空间直线上的投影近似表示。

The dissertation proposes a novel method for vector coding , i.e. Vector Projection method , which approximately represents a vector with the orthogonal projection of its endpoint onto a straight line .

利用直线的透视投影不变性来估计镜头的畸变参数，不需要知道摄像机的内外部参数，也不需要知道任何空间特征点的世界坐标，简化了镜头畸变校正的过程。

Without known camera parameters and any known world coordinates point in 3D space , the distortion parameters of camera lens can be estimated based on the perspective projection invariant of straight lines .

它将输入矢量用它在某条空间直线上的投影近似表示，而用决定这条直线的两个参考点的序号和一个反映该投影点相对于两参考点位置的比例因子作为编码。

It encodes every vector with 3 codes , where two are used to represent two reference points to determine a straight line , and the third one is used to describe the location of the projection point .

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。

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 .

对于已知方向性的直线的检测采用投影分析法。

The projection curve analysis was used for detection of direction-known lines .

两交叉直线段的辅助投影

Auxiliary Projection of Two Segments of Skew Lines

本文得到了空间直线和平面的投影阵，并举例说明了它在空间解析几何中的应用。

This paper obtains the projection matrices of line and plane and several examples are given for showing their applications in analytic geometry of space .

如何由两交叉直线段的基本投影，经过几次变换投影面，使其辅助投影成为等长而夹成定角的两直线段？

How can the principal projections of two segments of skew lines be transformed by several steps of substitution of projection planes into auxiliary projections of equal lengths with a given included angle ?

两交叉直线段的定比投影拟合直线

Specified Ratio Projection of Two Segments of Skew Lines Determining Straight

半直线上积分方程的投影方法

Projection methods for integral equations on the half line

利用空间直线的中心折反射投影的特性对全维视觉系统的标定方法进行了研究。

This paper introduces the study on omni - directional vision system calibration method using central catadioptric projection property of space line .

想象有一个管道，将地球放于其中，沿着直线将地球的图像投影到管道中。

Imagine taking a tube , placing the Earth inside of it , and projecting the Earth 's image onto the tube along that line .

在数学解析的基础上，根据平面和直线赤平投影的几何特征，利用CAD绘图功能制作平面、直线的赤平投影；

Based on the method of mathematical analysis , the stereographic projection of plane and line can be made by using CAD plotting function according to geometrical character of stereographic projection of plane and line .

首先对影像上提取的直线进行二分，根据重新匹配出的直线可确定实际物方直线在影像上的投影因镜头畸变而产生弯曲的程度，以此可对镜头的畸变进行检校。

At first , straight lines are extracted in the image while the actual line is slightly curved due to lens distortion .