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ImVoxelNet: Image to Voxels Projection for Monocular and Multi-View General-Purpose 3D Object Detection

ImVoxelNet: Image to Voxels Projection for Monocular and Multi-View General-Purpose 3D Object Detection

Abstract

In this paper, we introduce the task of multi-view RGB-based 3D object detection as an end-to-end optimization problem. To address this problem, we propose ImVoxelNet, a novel fully convolutional method of 3D object detection based on posed monocular or multi-view RGB images. The number of monocular images in each multiview input can variate during training and inference; actually, this number might be unique for each multi-view input. ImVoxelNet successfully handles both indoor and outdoor scenes, which makes it general-purpose. Specifically, it achieves state-of-the-art results in car detection on KITTI (monocular) and nuScenes (multi-view) benchmarks among all methods that accept RGB images. Moreover, it surpasses existing RGB-based 3D object detection methods on the SUN RGB-D dataset. On ScanNet, ImVoxelNet sets a new benchmark for multi-view 3D object detection.

Introduction

We implement a monocular 3D detector ImVoxelNet and provide its results and checkpoints on KITTI dataset. Results for SUN RGB-D, ScanNet and nuScenes are currently available in ImVoxelNet authors repo (based on mmdetection3d).

Results and models

KITTI

Backbone Class Lr schd Mem (GB) Inf time (fps) mAP Download
ResNet-50 Car 3x 17.26 model | log

SUN RGB-D

Backbone Lr schd Mem (GB) Inf time (fps) mAP@0.25 mAP@0.5 Download
ResNet-50 2x 7.2 22.5 40.96 13.50 model | log

Citation

@article{rukhovich2021imvoxelnet,
  title={ImVoxelNet: Image to Voxels Projection for Monocular and Multi-View General-Purpose 3D Object Detection},
  author={Danila Rukhovich, Anna Vorontsova, Anton Konushin},
  journal={arXiv preprint arXiv:2106.01178},
  year={2021}
}