射影直线
- 网络projection line;projective line;projective straight line
射影直线-
通过将拓扑映射引入到背向面去除判断中，将三维向量的空间角度关系判断转化成二维平面上投影向量的角度判断，然后再转化成一维射影直线上映射点的位置判断。
Angle comparison of two vectors in three dimensional space is converted to that of two projected vectors in two dimensional plane , then to two mapped points in one dimensional projection line .
-
利用消失点列的射影不变量描述平面直线关系
Description of Planar Line Relationship by Projective Invariant of Vanishing Points
-
二维射影变换中不变直线上至少有一不变点的另证
Another Method to Prove That the Plane Projective Transformation Has at Least One Fixed Point on an Invariant Line