离散点列的局部双圆弧逼近.pdf论文 用来拟合小线段，可以使小线段光滑，连续。-Discrete points of local double circular arc approximation, papers, can be used for small line segment fitting, continuous and smooth

基于改进的局部二值拟合主动轮廓模型的指静脉图像分割-he improved local two value fitting active contour model for finger vein image segmentation