Connected components are detected the first time to be chosen for fitting upper and lower edge lines.
首先进行第一次连通体检测，选择用于字符群上下边缘线拟合的连通体。
The wedge angle bisector gives as intersection with the cutting edge profile point pint. (3) Draw a circle that intersects point pint and is tangent to both straight fitting lines.
这 楔角的等分线给作为路口停止切割 边缘轮廓点品脱的啤酒。 （3）画一个圆订交点，两品脱和相切 直线拟合直线。
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