1) the theorem of dividing the segments into proportional by parallel lines
平行线分线段成比例定理
2) proportional segment
比例线段
3) graduated scale; representative scale
线段比例尺
4) parallel segments
平行线段
1.
1)If the length ratio of the two parallel segments is known,then from its projections across n images,a)2(n-1)quadratic constraint equations on camera internal parameters can be obtained;b)(5n-6)constraint equations can be obtained if additionally the epipoles across n images are known,among which 3(n-1)are quadratic,(n-2)third degree,and(n-1)fourth degree.
提出了一种基于空间平行线段的摄像机标定算法和理论。
5) parallel waterline
水线平行段
6) parallel line assay
平行线测定
补充资料：比例线段
[编辑] 比例线段
[解释]
在同一单位下，四条线段长度为a、b、c、d，其关系为a:b=c:d，那么，这四条线段叫做成比例线段或简称比例线段。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条