透视投影中参数的预定与信息的重建

Predetermination of parameter and information rebuilding in perspective projection

阐述了一种透视投影的方法，通过预定视角α，自动控制视距ｄ和调整灭点，获取视点，并重建三维信息，从而易于选择视域，增加了直观性，减少了透视图形生成过程中的盲目性．

The paper deals with a method of perspective projection. By means of deciding view angle α, the view distance d is controlled, the vanishing points are adjusted and the view points is got automatically. A range of view can be easy chosen, the direction of view can be given and the blindness of getting perspective view can be reduced by 3Dinformation rebuilding.