Online Multi-Object Tracking with Unsupervised Re-Identification Learning and Occlusion Estimation

• URL: http://arxiv.org/abs/2201.01297v1
• Date: Tue, 4 Jan 2022 18:59:58 GMT
• Title: Online Multi-Object Tracking with Unsupervised Re-Identification Learning and Occlusion Estimation
• Authors: Qiankun Liu and Dongdong Chen and Qi Chu and Lu Yuan and Bin Liu and Lei Zhang and Nenghai Yu
• Abstract summary: Occlusion between different objects is a typical challenge in Multi-Object Tracking (MOT) In this paper, we focus on online multi-object tracking and design two novel modules to handle these problems. The proposed unsupervised re-identification learning module does not require any (pseudo) identity information nor suffer from the scalability issue. Our study shows that, when applied to state-of-the-art MOT methods, the proposed unsupervised re-identification learning is comparable to supervised re-identification learning.
• Score: 80.38553821508162
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Occlusion between different objects is a typical challenge in Multi-Object Tracking (MOT), which often leads to inferior tracking results due to the missing detected objects. The common practice in multi-object tracking is re-identifying the missed objects after their reappearance. Though tracking performance can be boosted by the re-identification, the annotation of identity is required to train the model. In addition, such practice of re-identification still can not track those highly occluded objects when they are missed by the detector. In this paper, we focus on online multi-object tracking and design two novel modules, the unsupervised re-identification learning module and the occlusion estimation module, to handle these problems. Specifically, the proposed unsupervised re-identification learning module does not require any (pseudo) identity information nor suffer from the scalability issue. The proposed occlusion estimation module tries to predict the locations where occlusions happen, which are used to estimate the positions of missed objects by the detector. Our study shows that, when applied to state-of-the-art MOT methods, the proposed unsupervised re-identification learning is comparable to supervised re-identification learning, and the tracking performance is further improved by the proposed occlusion estimation module.

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