Opening up Open-World Tracking

• URL: http://arxiv.org/abs/2104.11221v1
• Date: Thu, 22 Apr 2021 17:58:15 GMT
• Title: Opening up Open-World Tracking
• Authors: Yang Liu and Idil Esen Zulfikar and Jonathon Luiten and Achal Dave and Aljo\v{s}a O\v{s}ep and Deva Ramanan and Bastian Leibe and Laura Leal-Taix\'e
• Abstract summary: We propose and study Open-World Tracking (OWT) This paper is the formalization of the OWT task, along with an evaluation protocol and metric (OWTA) We show that our Open-World Tracking Baseline, while performing well in the OWT setting, also achieves near state-of-the-art results on traditional closed-world benchmarks.
• Score: 62.12659607088812
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, we propose and study Open-World Tracking (OWT). Open-world tracking goes beyond current multi-object tracking benchmarks and methods which focus on tracking object classes that belong to a predefined closed-set of frequently observed object classes. In OWT, we relax this assumption: we may encounter objects at inference time that were not labeled for training. The main contribution of this paper is the formalization of the OWT task, along with an evaluation protocol and metric (Open-World Tracking Accuracy, OWTA), which decomposes into two intuitive terms, one for measuring recall, and another for measuring track association accuracy. This allows us to perform a rigorous evaluation of several different baselines that follow design patterns proposed in the multi-object tracking community. Further we show that our Open-World Tracking Baseline, while performing well in the OWT setting, also achieves near state-of-the-art results on traditional closed-world benchmarks, without any adjustments or tuning. We believe that this paper is an initial step towards studying multi-object tracking in the open world, a task of crucial importance for future intelligent agents that will need to understand, react to, and learn from, an infinite variety of objects that can appear in an open world.

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