拟合圆，具体的参考文献为“ G. Taubin, "Estimation Of Planar Curves, Surfaces And Nonplanar Space Curves Defined By Implicit Equations, With Applications To Edge And Range Image Segmentation",IEEE Trans. PAMI, Vol. 13, pages 1115-1138, (1991)”-Fitting circle, the

此算法实现了 Enhanced Coorelation coefficient 跟踪，详细参见文章 G.D.Evangelidis, E.Z.Psarakis, Parametric Image Alignment using Enhanced Correlation Coefficient , IEEE Trans. on PAMI, vol.30, no.10, 2008 -This software implements the ECC image alignme