4篇文章：Multiple Object Tracking Using K-Shortest Paths Optimization；Moving target classification and tracking from real-time video；高斯混合概率假设密度滤波器在多目标跟踪中的应用；基于特征迹的密集多目标自适应视频跟踪-4papers:Multiple Object Tracking Using K-Shortest Paths Optimization；Moving ta