有向线段
- 网络directed line segment;directed segment
有向线段-
将十字丝轮廓抽象成两组相交的有向线段，提出了一种基于随机Hough变换（RHT）的十字丝自动检测算法。
A fast automatic cross detecting algorithm based on randomized hough transform ( RHT ) is proposed which regards the cross contour as two groups of parallel lines .
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过程中的每个任务都利用一个矩形框来表示，而任务之间的先后顺序关系则利用有向线段来表示。
Each task in the process uses a rectangle to represent , and precedence relations between tasks use the line segment to represent .
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通过将被裁剪线段定义为有向线段、确定窗口边界的进出边，避免了不必要的求交计算。
With the introduction of the direction for each line segment , the entry and exit boundary lines of the clipping window are classified , resulting in less intersection calculation for the process .