Temp-Frustum Net: 3D Object Detection with Temporal Fusion

• URL: http://arxiv.org/abs/2104.12106v1
• Date: Sun, 25 Apr 2021 09:08:14 GMT
• Title: Temp-Frustum Net: 3D Object Detection with Temporal Fusion
• Authors: Eme\c{c} Er\c{c}elik, Ekim Yurtsever and Alois Knoll
• Abstract summary: 3D object detection is a core component of automated driving systems. Frame-by-frame 3D object detection suffers from noise, field-of-view obstruction, and sparsity. We propose a novel Temporal Fusion Module to mitigate these problems.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 3D object detection is a core component of automated driving systems. State-of-the-art methods fuse RGB imagery and LiDAR point cloud data frame-by-frame for 3D bounding box regression. However, frame-by-frame 3D object detection suffers from noise, field-of-view obstruction, and sparsity. We propose a novel Temporal Fusion Module (TFM) to use information from previous time-steps to mitigate these problems. First, a state-of-the-art frustum network extracts point cloud features from raw RGB and LiDAR point cloud data frame-by-frame. Then, our TFM module fuses these features with a recurrent neural network. As a result, 3D object detection becomes robust against single frame failures and transient occlusions. Experiments on the KITTI object tracking dataset show the efficiency of the proposed TFM, where we obtain ~6%, ~4%, and ~6% improvements on Car, Pedestrian, and Cyclist classes, respectively, compared to frame-by-frame baselines. Furthermore, ablation studies reinforce that the subject of improvement is temporal fusion and show the effects of different placements of TFM in the object detection pipeline. Our code is open-source and available at https://gitlab.lrz.de/emec_ercelik/temp-frustnet.

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