Is SIFT a segmentation algorithm?

I must track a person in a scene using a segmentation algorithm. SIFT will do the job but is it definitely considered 开发者_开发技巧a segmentation algorithm or something else altogether?

Many thanks.

SIFT is not a segmentation algorithm. SIFT can be considered and image description method, a keypoint matching algorithm an object recognition method but definitely not a segmentation algorithm.

SIFT locates interest points, ie points that have a well defined location in the image. This will often be corners and line ends.