sift the c++ algorithm, is not based on the opencv, as I do not understand.

siftpp-0.7.3
............\siftpp-0.7.3
............\............\benchmark.cpp
............\............\data
............\............\....\img3.pgm
............\............\Debug
............\............\.....\vc60.idb
............\............\.....\vc60.pdb
............\............\doxygen.conf
............\............\Makefile
............\............\man.html
............\............\notice.txt
............\............\README
............\............\sift-conv.tpp
............\............\sift-driver.cpp
............\............\sift.1
............\............\sift.cpp
............\............\sift.hpp
............\............\sift.html
............\............\sift.ipp
............\............\siftpp.dsp
............\............\siftpp.dsp.bak
............\............\siftpp.dsw
............\............\siftpp.ncb
............\............\siftpp.opt
............\............\siftpp.plg
............\............\test_atan2.m
............\............\TIMESTAMP

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