asift,全名是 affine scale-invariant feature transform ，即 仿射性尺度不变特征变换，是用来提取较大仿射扭曲不变的特征区域的一种方法，相信对大家有用-asift, full name is the affine scale-invariant feature transform, that is, of scale-invariant features of affine transform

SIFT and matching algorithm