说明：  This paper presents a method for extracting distinctive invariant features from images that can be used to perform reliable matching between different views of an object or scene. 局部不变特征，很好的资料。（SIFT）
(This paper presents a method for extracting distinctive invariant features from images that can be used to perform reliable matching between different views of an object or scene. Local invariant features, very good information. (SIFT))