This the official code of SIFT, in the readme, and then run in matlab

SIFT_YantaoNoemie\demo-data\image068.JPG
.................\.........\image069.JPG
.................\.........\object0024.view01.png
.................\.........\object0024.view03.png
.................\.........\Thumbs.db
.................\demo-data
.................\..scriptor\do_descriptor.m
.................\descriptor
.................\do_demo_1.m
.................\do_demo_2.asv
.................\do_demo_2.m
.................\do_demo_3.m
.................\do_demo_4.m
.................\do_sift.m
.................\key-location\do_extrefine.m
.................\............\do_localmax.asv
.................\............\do_localmax.m
.................\key-location
.................\main.m
.................\..tch\do_match.asv
.................\.....\do_match.m
.................\match
.................\orientation\do_orientation.m
.................\orientation
.................\README.txt
.................\README.txt.bak
.................\scale-space\do_diffofg.m
.................\...........\do_gaussian.m
.................\...........\smooth.m
.................\scale-space
.................\sift_demo.m
.................\util\appendimages.m
.................\....\imreadbw.m
.................\....\plotsiftdescriptor.asv
.................\....\plotsiftframe.m
.................\....\plotss.m
.................\....\tightsubplot.m
.................\util
SIFT_YantaoNoemie

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