This is a fork of SIFT++, a lightweight C++ implementation of the SIFT detector and descriptor, written by Andrea Vedaldi.
The original README can be found in README.txt. See also NOTICE.txt
For compiling, use CMake (sudo apt-get install cmake):
$ git clone https://github.com/davidstutz/vedaldi2006-siftpp.git
$ cd vedaldi2006-siftpp
$ cmake .
$ make
# Run sift on the provided example image:
$ ./sift --verbose --output data/img3 --save-gss data/img3.pgm
All options can be seen in sift-driver.cpp; all keypoint descriptors will be saved to data/img3.key.
For license information see NOTICE.txt. Note that permission to use, modify and distribute SIFT++ is only granted for educational and research purposes! Further, note that a patent has been issued for the SIFT algorithm (quoted from http://www.robots.ox.ac.uk/~vedaldi/code/siftpp.html):
This software embodies a method for which the following patent has been issued: "Method and apparatus for identifying scale invariant features in an image and use of same for locating an object in an image," David G. Lowe, US Patent 6,711,293 (March 23, 2004). Provisional application filed March 8, 1999. Asignee: The University of British Columbia.