In stereo vision, the line structure extraction from a perspective view of a simple polyhedron is the key step for later corresponding problem, recognition and understanding.

在立体视觉中，从简单多面体的透视图象中提取线条结构对于以后的对应点匹配、识别和理解是非常关键的一步。

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Also the analysis of visual point and visual range, makes the relation between the size of perspective view and it effect more obvious, easy to control and adjust.

通过对视点、视距的分析，使透视图的大小与效果之间的关系清晰明了，易于控制和调整。

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Also the analysis of visual point and visual range, makes the relation between the size of perspective view and it effect more obvious, easy to control and adjust.

通过对视点、视距的分析，使透视图的大小与效果之间的关系清晰明了，易于控制和调整。

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