基于自适应同时稀疏表示的鲁棒性目标追踪

Robust Visual Tracking Based on Adaptive Simultaneous Sparse Representation

  • 摘要: 综合考虑高斯噪声和拉普拉斯噪声,并通过拉普拉斯噪声的能量大小自适应的选择稀疏模型,该文提出了基于同时稀疏表示的自适应追踪算法。该算法可以更好的解决目标遮挡、姿势改变、光照变化和背景混杂等追踪问题,且具有更强的鲁棒性。其次提出一种基于子空间学习和无监督学习(K-means)相结合的模板更新方法,该方法一方面可以及时有效地反应目标的状态,另一方面也可以避免模板更新过快而引入较大的误差。然后,利用LASSO算法对该模型做了进一步的改进,并将目前较好的9种追踪算法与该文提出的算法进行比较,实验结果表明该算法在鲁棒性、精确性和实时性方面都得到了较好的改善。

     

    Abstract: Sparse representation has already been successfully applied to the visual tracking, but it also faces with unstable factors. In this paper, we propose an adaptive tracking algorithm based on simultaneous sparse representation which considers the Gaussian noise and Laplace noise. The sparse model is chosen adaptively according to the energy of Laplace noise. The proposed algorithm can better solve the problem of targets such as occlusion, pose change, illumination variation and background clutter, and the algorithm has better robustness. Secondly, the template update method based on the subspace learning and unsupervised learning (K-means) is given to respond the target state in a timely and effective manner and to avoid the template update too fast and introduce significant error. Then, the LASSO algorithm is used to further improve the model. Finally, comparing the current nine state-of-the-art tracking algorithms with the proposed algorithm in this paper, the experimental results illustrate that the proposed algorithm have the better performance in terms of robustness, accuracy and real time.

     

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