结合PCA的尺度不变特征变换(SIFT)算法，已经调试成功.内含m文件，可直接运行，利用最小二乘算法实现对三维平面的拟合。- Combined with PCA scale invariant feature transform (SIFT) algorithm, Has been successful debugging. M contains files can be directly run, Least-squares algorithm to fit a three-dimensional plane.