We make use of adaptive binary image,morphologic thinning,remove pseudo-structures,distance-taxis of the extended point and high-power curvefitting to have slaved this problem.

• 利用自适应二值化、形态学细化、偏轴去枝、近端点边沿距离排序、高次方曲线拟合,终于解决了这一难题,获得了满意的实验结果。