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58).如何求解对离散点的最优椭圆拟合?(Andrew Fitzgibbon, et al)
:#Authors: Andrew Fitzgibbon, Maurizio Pilu, Bob Fisher
"Direct Least Squares Fitting of Ellipses", IEEE T-PAMI, 1999# http://bbs.dartmouth.edu/~fangq/MATH/Source/fitellipse.m