In vertical ground objects based approach, vertical vanishing point and the plane vanishing line can be obtained by top-points and bottom-points of vertical objects (always, human).
基于地面垂直目标的标定方法，由垂直目标(人体)的头顶点和脚底点得到垂直消失点和水平消失线。
The perspective direction of a desired line is usually determined by connecting a given point with the vanishing point of this line.
连接灭点与已知点的透视，决定了所作直线的透视方向。
The perspective direction of a desired line is usually determined by connecting a given point with the vanishing point of this line.
连接灭点与已知点的透视，决定了所作直线的透视方向。
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