Affine SIFT 比SIFT匹配算法的精度到好多倍-Affine SIFT SIFT matching accuracy than to the good times

本代码用来计算一种局部描述子ASIFT，ASIFT是SIFT的改进。相比于SIFT，ASIFT具有更好的仿射不变性，但计算复杂度也更高。-ASIFT（affine sift）is a kind of local descr iptor, which has a better affine invariant property. But the computation complexity of ASIFT is higher than SIFT.

ASIFT 快速提取特征点和 图像的快速匹配 -SATFT matching

得到图像的特征点以及对应的特 征向量后，采用关键点特征向量的欧式距离作为两幅图 像中关键点的相似性判定度量(The feature points and corresponding features of the image are obtained After the eigenvector, the Euclidean distance of the feature vector of the key points is used as the two map Similarity