Depending on the special relationship between vertexes and their center in a regular polygon a projective invariance is formed to extract the rotational center of object.
并利用正多边形顶点与形心的关系约束形成射影不变性,用来自动检测目标的旋转中心。
Acupuncture was all towards the center of projective area. After depi, twirling for 2 minutes at the frequency of 180-200 times per minute, uniform reinforcing-reducing method was conducted, retaining needle for 20 minutes, and intermission for twice at interval.
针刺方向皆刺向投射区的中心,得气后以180~200次/min的频率捻转2min,施行平补平泻手法,留针20min,中间间断行针2次。
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