SIFT algorithm, detailed and have some reference value

sift-master
...........\.DS_Store
...........\README.md
...........\calculateDog.m
...........\calculateKeypoints.m
...........\defineOrientation.m
...........\gaussianBlur.m
...........\getMatches.m
...........\images
...........\......\.DS_Store
...........\......\landscape-a.jpg
...........\......\landscape-b.jpg
...........\......\lenna3.png
...........\......\model1.png
...........\......\model2.png
...........\......\quaker_rot1.jpg
...........\......\quaker_rot2.jpg
...........\......\quaker_s1.jpg
...........\......\quaker_s1_dark.jpg
...........\......\quaker_s2.jpg
...........\......\squirrel1.jpg
...........\......\squirrel2.jpg
...........\libs
...........\....\adjust_quiver_arrowhead_size.m
...........\localDescriptor_v3.m
...........\plotDescriptor.m
...........\plotMatches.m
...........\scaleSpace.m
...........\siftDescriptor.m

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