... projected area 投影面积 projected planform 投影平面形 projected propeller area 螺旋桨投影面积 ...
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基于类似形的定义给出了在透视投影下平面多边形为类似形的识别算法。
A new algorithm is presented for recognizing planar objects from a line drawing under axonometric and perspective projections based on principle of homograph.
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