MBPTrack: Improving 3D Point Cloud Tracking with Memory Networks and Box Priors

• URL: http://arxiv.org/abs/2303.05071v1
• Date: Thu, 9 Mar 2023 07:07:39 GMT
• Title: MBPTrack: Improving 3D Point Cloud Tracking with Memory Networks and Box Priors
• Authors: Tian-Xing Xu, Yuan-Chen Guo, Yu-Kun Lai, Song-Hai Zhang
• Abstract summary: 3D single object tracking has been a crucial problem for decades with numerous applications such as autonomous driving. We present MBPTrack, which adopts a Memory mechanism to utilize past information and formulates localization in a coarse-to-fine scheme.
• Score: 59.55870742072618
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 3D single object tracking has been a crucial problem for decades with numerous applications such as autonomous driving. Despite its wide-ranging use, this task remains challenging due to the significant appearance variation caused by occlusion and size differences among tracked targets. To address these issues, we present MBPTrack, which adopts a Memory mechanism to utilize past information and formulates localization in a coarse-to-fine scheme using Box Priors given in the first frame. Specifically, past frames with targetness masks serve as an external memory, and a transformer-based module propagates tracked target cues from the memory to the current frame. To precisely localize objects of all sizes, MBPTrack first predicts the target center via Hough voting. By leveraging box priors given in the first frame, we adaptively sample reference points around the target center that roughly cover the target of different sizes. Then, we obtain dense feature maps by aggregating point features into the reference points, where localization can be performed more effectively. Extensive experiments demonstrate that MBPTrack achieves state-of-the-art performance on KITTI, nuScenes and Waymo Open Dataset, while running at 50 FPS on a single RTX3090 GPU.

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