SGM3D: Stereo Guided Monocular 3D Object Detection

• URL: http://arxiv.org/abs/2112.01914v1
• Date: Fri, 3 Dec 2021 13:57:14 GMT
• Title: SGM3D: Stereo Guided Monocular 3D Object Detection
• Authors: Zheyuan Zhou and Liang Du and Xiaoqing Ye and Zhikang Zou and Xiao Tan and Errui Ding and Li Zhang and Xiangyang Xue and Jianfeng Feng
• Abstract summary: We propose a stereo-guided monocular 3D object detection network, termed SGM3D. We exploit robust 3D features extracted from stereo images to enhance the features learned from the monocular image. Our method can be integrated into many other monocular approaches to boost performance without introducing any extra computational cost.
• Score: 62.11858392862551
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Monocular 3D object detection is a critical yet challenging task for autonomous driving, due to the lack of accurate depth information captured by LiDAR sensors. In this paper, we propose a stereo-guided monocular 3D object detection network, termed SGM3D, which leverages robust 3D features extracted from stereo images to enhance the features learned from the monocular image. We innovatively investigate a multi-granularity domain adaptation module (MG-DA) to exploit the network's ability so as to generate stereo-mimic features only based on the monocular cues. The coarse BEV feature-level, as well as the fine anchor-level domain adaptation, are leveraged to guide the monocular branch. We present an IoU matching-based alignment module (IoU-MA) for object-level domain adaptation between the stereo and monocular predictions to alleviate the mismatches in previous stages. We conduct extensive experiments on the most challenging KITTI and Lyft datasets and achieve new state-of-the-art performance. Furthermore, our method can be integrated into many other monocular approaches to boost performance without introducing any extra computational cost.

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