Multi-Correlation Siamese Transformer Network with Dense Connection for 3D Single Object Tracking

• URL: http://arxiv.org/abs/2312.11051v1
• Date: Mon, 18 Dec 2023 09:33:49 GMT
• Title: Multi-Correlation Siamese Transformer Network with Dense Connection for 3D Single Object Tracking
• Authors: Shihao Feng, Pengpeng Liang, Jin Gao, Erkang Cheng
• Abstract summary: Point cloud-based 3D object tracking is an important task in autonomous driving. It remains challenging to learn the correlation between the template and search branches effectively with the sparse LIDAR point cloud data. We present a multi-correlation Siamese Transformer network that has multiple stages and carries out feature correlation at the end of each stage.
• Score: 14.47355191520578
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Point cloud-based 3D object tracking is an important task in autonomous driving. Though great advances regarding Siamese-based 3D tracking have been made recently, it remains challenging to learn the correlation between the template and search branches effectively with the sparse LIDAR point cloud data. Instead of performing correlation of the two branches at just one point in the network, in this paper, we present a multi-correlation Siamese Transformer network that has multiple stages and carries out feature correlation at the end of each stage based on sparse pillars. More specifically, in each stage, self-attention is first applied to each branch separately to capture the non-local context information. Then, cross-attention is used to inject the template information into the search area. This strategy allows the feature learning of the search area to be aware of the template while keeping the individual characteristics of the template intact. To enable the network to easily preserve the information learned at different stages and ease the optimization, for the search area, we densely connect the initial input sparse pillars and the output of each stage to all subsequent stages and the target localization network, which converts pillars to bird's eye view (BEV) feature maps and predicts the state of the target with a small densely connected convolution network. Deep supervision is added to each stage to further boost the performance as well. The proposed algorithm is evaluated on the popular KITTI, nuScenes, and Waymo datasets, and the experimental results show that our method achieves promising performance compared with the state-of-the-art. Ablation study that shows the effectiveness of each component is provided as well. Code is available at https://github.com/liangp/MCSTN-3DSOT.

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