# Distance-metric for SIFT descriptors matching

Will using Cosine-Similarity or Histogram Intersection as distance-metric, for matching SIFT descriptors, help to get better results?

Anybody tried on that ever?

• I havent tried Cosine-Similarity or Histogram Intersection yet, but Arandjelovic has proposed to use Hellinger metric instead of L2 and shown that it gives better results. robots.ox.ac.uk/~vgg/publications/2012/Arandjelovic12/… – old-ufo Feb 16 '14 at 10:06
• have you tried seas.upenn.edu/~ofirpele/SiftDist – Ankit Nayan Feb 16 '14 at 11:01
• I have seen it, but since it cannot be used in kd-tree, it doesnt fit me - n^2 matching is too slow. RootSIFT - instead - could be easily used in kd-tree. – old-ufo Feb 16 '14 at 11:15