Classical SIFT algorithm, the first step, select the point of interest second step, points of interest were screened to identify key points the third step, the key point for the distribution of direction The fourth step is described with the key in the form of multi-dimensional vector point

sift代码\sift DemoV4\appendimages.m
........\...........\basmati.pgm
........\...........\book.pgm
........\...........\box.pgm
........\...........\defs.h
........\...........\LICENSE
........\...........\Makefile
........\...........\match.c
........\...........\match.m
........\...........\README
........\...........\scene.pgm
........\...........\showkeys.m
........\...........\sift
........\...........\sift.m
........\...........\siftWin32.exe
........\...........\util.c
........\siftDemoV4.zip
........\sift DemoV4
sift代码

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