Projects / libsift


The scale-invariant feature transform is an algorithm to identify and locate interesting points within an image. For all such points, a descriptive signature is extracted. The signatures can be stored and matched among multiple images, allowing for a large number of interesting applications, such as aligning overlapping images and identifying objects or motion within image sequences. libsift is used by the autopano-sift program to create panorama images.

Operating Systems

Recent releases

  •  21 Jan 2006 12:07

    Release Notes: A serious bug in the Gaussian sigma computation and a bug in the DoG scale handling were fixed.

    •  16 Nov 2004 19:40

      Release Notes: The SIFT descriptor has been constructed in an invalid way, which is fixed now, but the old descriptors cannot be used anymore.

      •  19 Oct 2004 18:45

        Release Notes: All changes due to the release of autopano-sift 2.0 have been included. Most importantly, the matching of keypoints is now eight times as fast. The license has been changed to the GPL.

        •  23 Sep 2004 18:58

          Release Notes: The Gtk# dependency can be dropped for some utilities. There are some small bugfixes.

          •  14 Sep 2004 11:15

            Release Notes: A rarely triggered exception bug has been fixed. Bugs in the output display have been fixed. The matching code has been improved.


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