In addition,the concept of partial contour center is also proposed that distribution of steel bar center is calculated according to partial contour of the steel bar,and then the number of cen.

• 另外,还提出局部轮廓形心的概念,根据棒材的部分轮廓得到棒材形心的分布,通过聚类方法确定棒材形心的数目,从而得到棒材的数目。