FOLT: Fast Multiple Object Tracking from UAV-captured Videos Based on Optical Flow

• URL: http://arxiv.org/abs/2308.07207v2
• Date: Tue, 15 Aug 2023 02:59:04 GMT
• Title: FOLT: Fast Multiple Object Tracking from UAV-captured Videos Based on Optical Flow
• Authors: Mufeng Yao, Jiaqi Wang, Jinlong Peng, Mingmin Chi, Chao Liu
• Abstract summary: Multiple object tracking (MOT) has been successfully investigated in computer vision. However, MOT for the videos captured by unmanned aerial vehicles (UAV) is still challenging due to small object size, blurred object appearance, and very large and/or irregular motion. We propose FOLT to mitigate these problems and reach fast and accurate MOT in UAV view.
• Score: 27.621524657473945
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multiple object tracking (MOT) has been successfully investigated in computer vision. However, MOT for the videos captured by unmanned aerial vehicles (UAV) is still challenging due to small object size, blurred object appearance, and very large and/or irregular motion in both ground objects and UAV platforms. In this paper, we propose FOLT to mitigate these problems and reach fast and accurate MOT in UAV view. Aiming at speed-accuracy trade-off, FOLT adopts a modern detector and light-weight optical flow extractor to extract object detection features and motion features at a minimum cost. Given the extracted flow, the flow-guided feature augmentation is designed to augment the object detection feature based on its optical flow, which improves the detection of small objects. Then the flow-guided motion prediction is also proposed to predict the object's position in the next frame, which improves the tracking performance of objects with very large displacements between adjacent frames. Finally, the tracker matches the detected objects and predicted objects using a spatially matching scheme to generate tracks for every object. Experiments on Visdrone and UAVDT datasets show that our proposed model can successfully track small objects with large and irregular motion and outperform existing state-of-the-art methods in UAV-MOT tasks.

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