说明：  本段代码实现了手动选点的matlab配准，在此代码中只选择了3对控制点，同时从结果可以看出手动选点配准的不精确性，为自动选点配准算法的提出提供了实验依据
(This code implements manually selected point matlab registration, in this code to select only the three pairs of control points, and the results can be seen from the point of registration manually selected imprecision, with the choice of site for the proposed automatic registration algorithm provide an experimental basis)