基于SiamBAN跟踪器改进的目标跟踪算法

Improved Object Tracking Algorithm Based on SiamBAN Tracker

孪生网络系列的跟踪器基于相似度匹配的方法来实现目标跟踪,当遇到相似干扰物时会发生跟踪漂移现象,从而导致跟踪失败.针对这个问题,以SiamBAN跟踪器为研究基础,提出了一种改进算法.主要改进包括:在训练阶段,加入中心回归分支来降低远离目标中心的边界框分数,同时引入Focal Loss损失函数,在推理阶段设计了全新的筛选策略,来区分要跟踪的目标和相似干扰物.改进后的算法在OTB100测试集的成功率和精度相比于原来分别提高了2.1%和3%,在GOT10k的测试集上成功率比原来提高了2.1%.

The siamese network series tracker utilizes the similarity matching method for object tracking,but tracking drift can occur when similar distractors are encountered,leading to tracking failure.To solve this problem,based on the research of SiamBAN tracker,an improved algorithm is proposed.Major improvements include the addition of a centerness branch during training to reduce bounding box scores far from the object center,the introduction of the Focal Loss function,and a new screening strategy during inference to differentiate the target from similar distractors.Compared with the original,the success plot and precision plot of the improved algorithm are increased by 2.1%and 3%respectively on the OTB100 test set,and the success plot is 2.1%higher than the original on the GOT10k test set.