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Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 352634, 7 pages
http://dx.doi.org/10.1155/2013/352634
Research Article

Robust Online Object Tracking Based on Feature Grouping and 2DPCA

College of Information & Communication Engineering, Dalian Nationalities University, Dalian 116600, China

Received 20 March 2013; Revised 7 May 2013; Accepted 13 May 2013

Academic Editor: Shangbo Zhou

Copyright © 2013 Ming-Xin Jiang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present an online object tracking algorithm based on feature grouping and two-dimensional principal component analysis (2DPCA). Firstly, we introduce regularization into the 2DPCA reconstruction and develop an iterative algorithm to represent an object by 2DPCA bases. Secondly, the object templates are grouped into a more discriminative image and a less discriminative image by computing the variance of the pixels in multiple frames. Then, the projection matrix is learned according to the more discriminative image and the less discriminative image, and the samples are projected. The object tracking results are obtained using Bayesian maximum a posteriori probability estimation. Finally, we employ a template update strategy which combines incremental subspace learning and the error matrix to reduce tracking drift. Compared with other popular methods, our method reduces the computational complexity and is very robust to abnormal changes. Both qualitative and quantitative evaluations on challenging image sequences demonstrate that the proposed tracking algorithm achieves more favorable performance than several state-of-the-art methods.