To realize the quick real-time recognition of the number, the values of the feature Numbers after projection were processed in accordance with the original projective direction.

为实现对数字的快速识别，对得到的数字投影值采用了方向特征的处理方法。

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Sphenoid projection, a projection has more projective centers which are the crossing points intersected by minor axis of the ellipsoid and the parallel planes.

楔形投影是以过该点纬线所在平面与椭球短轴交点为投影中心作中心投影。

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An dynamic projective method of series alternate projection system is studied in this paper. Using dynamic sight point of common locus and orientation with dynamic view.

本文提出了采用和动态观察时双眼同轨迹、同方位的动态视点，用一系列变换的投影体系进行投影的“动态投影法”。

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