(1)ICCV1999 Object Recognition from Local Scale-Invariant Features.pdf提出(作者:David G. Lowe)(2)IJCV2004 Distinctive image features from scale invariant keypoints.pdf总结(作者:David G. Lowe)(3)CVPR2004 PCA-SIFT:A More Distinctive Representation for Local Image Descriptors.pdf加PCA降维