摘要： 针对多目标跟踪在复杂场景中的遮挡、漏检和噪声问题,利用关键点建模和弱监督外观模型更新,提出一种改进的多目标检测与跟踪方法。使用角点检测器获得关键点及其绝对位置,运用背景差分法得到图像的二值映射。根据图像映射将关键点分为显著关键点和微弱关键点,利用显著关键点构造候选模型,并应用弱监督外观模型对目标跟踪框进行更新,从而实现多目标检测。在多个视频集上的实验结果表明,与基于高斯混合概率密度滤波器的跟踪方法、连续前向估计的多目标跟踪方法相比,该方法具有更高的多目标跟踪精度及更快的运行速度。

关键词: 多目标跟踪, 角点检测, 关键点, 弱监督外观模型, 跟踪精度

Abstract: Concerning the occlusion,missing detection and noise in multi-target tracking under complex scene,an improved method of multi-target detection and tracking using key-point modeling and weakly supervised appearance model updating is proposed.Firstly,a corner detector is used to get the key-points and theirs absolute position,and background subtraction is applied to obtain binary mapping.Then,key-points are classified into significant key-points and weak key-points by mapping images.Significant key-points are used to build candidate models.Finally,weakly supervised appearance model is used to update tracking frames and realize multi-target detection.Experimental results on several video sets show that compared with GM-PHD tracking method and multi-target tracking method of continuous forward estimation,the proposed method has higher multi-target tracking accuracy and faster running speed.

Key words: multi-target tracking, corner detection, key-point, weakly supervised appearance model, tracking accuracy

中图分类号: 

• TP391