Visual tracking using discriminative representation with ℓ2 regularization
Haijun WANG1,2(), Hongjuan GE1
1. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China 2. Aviation Information Technology Research and Development Center, Binzhou University, Binzhou 256603, China
In this paper, we propose a novel visual tracking method using a discriminative representation under a Bayesian framework. First, we exploit the histogram of gradient (HOG) to generate the texture features of the target templates and candidates. Second, we introduce a novel discriminative representation and ℓ2-regularized least squares method to solve the proposed representation model. The proposed model has a closed-form solution and very high computational efficiency. Third, a novel likelihood function and an update scheme considering the occlusion factor are adopted to improve the tracking performance of our proposed method. Both qualitative and quantitative evaluations on 15 challenging video sequences demonstrate that our method can achieve more robust tracking results in terms of the overlap rate and center location error.
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