Object tracking using SIFT features and mean shift

  • Authors:
  • Huiyu Zhou;Yuan Yuan;Chunmei Shi

  • Affiliations:
  • Brunel University, Uxbridge, Electronic and Computer Engineering, Middlesex UB8 3PH, UK;Aston University, Aston Triangle, Birmingham B4 7ET, UK;People's Hospital of Guangxi, Nanning, Guangxi, China

  • Venue:
  • Computer Vision and Image Understanding
  • Year:
  • 2009

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Abstract

A scale invariant feature transform (SIFT) based mean shift algorithm is presented for object tracking in real scenarios. SIFT features are used to correspond the region of interests across frames. Meanwhile, mean shift is applied to conduct similarity search via color histograms. The probability distributions from these two measurements are evaluated in an expectation-maximization scheme so as to achieve maximum likelihood estimation of similar regions. This mutual support mechanism can lead to consistent tracking performance if one of the two measurements becomes unstable. Experimental work demonstrates that the proposed mean shift/SIFT strategy improves the tracking performance of the classical mean shift and SIFT tracking algorithms in complicated real scenarios.