[![arXiv](https://img.shields.io/badge/arXiv-Paper-.svg)](https://arxiv.org/abs/2204.12463) ![visitors](https://visitor-badge.glitch.me/badge?page_id=dvlab-research/FocalsConv) # Focal Sparse Convolutional Networks for 3D Object Detection (CVPR 2022, Oral) This is the official implementation of ***Focals Conv*** (CVPR 2022), a new sparse convolution design for 3D object detection (feasible for both lidar-only and multi-modal settings). For more details, please refer to: **Focal Sparse Convolutional Networks for 3D Object Detection [[Paper](https://arxiv.org/abs/2204.12463)]**
Yukang Chen, Yanwei Li, Xiangyu Zhang, Jian Sun, Jiaya Jia

### Experimental results #### KITTI dataset | | Car@R11 | Car@R40 |download | |---------------------------------------------|-------:|:-------:|:---------:| | [PV-RCNN + Focals Conv](OpenPCDet/tools/cfgs/kitti_models/pv_rcnn_focal_lidar.yaml) | 83.91 | 85.20 | [Google](https://drive.google.com/file/d/1XOpIzHKtkEj9BNrQR6VYADO_T5yaOiJq/view?usp=sharing) \| [Baidu](https://pan.baidu.com/s/1t1Gk8bDv8Q_Dd5vB4VtChA) (key: m15b) | | [PV-RCNN + Focals Conv (multimodal)](OpenPCDet/tools/cfgs/kitti_models/pv_rcnn_focal_multimodal.yaml) | 84.58 | 85.34 | [Google](https://drive.google.com/file/d/183araPcEmYSlruife2nszKeJv1KH2spg/view?usp=sharing) \| [Baidu](https://pan.baidu.com/s/10XodrSazMFDFnTRdKIfbKA) (key: ie6n) | | [Voxel R-CNN (Car) + Focals Conv (multimodal)](OpenPCDet/tools/cfgs/kitti_models/voxel_rcnn_car_focal_multimodal.yaml) | 85.68 | 86.00 | [Google](https://drive.google.com/file/d/1M7IUosz4q4qHKEZeRLIIBQ6Wj1-0Wjdg/view?usp=sharing) \| [Baidu](https://pan.baidu.com/s/1bIN3zDmPXrURMOPg7pukzA) (key: tnw9) | #### nuScenes dataset | | mAP | NDS | download | |---------------------------------------------|----------:|:-------:|:---------:| | [CenterPoint + Focals Conv (multi-modal)](CenterPoint/configs/nusc/voxelnet/nusc_centerpoint_voxelnet_0075voxel_fix_bn_z_focal_multimodal.py) | 63.86 | 69.41 | [Google](https://drive.google.com/file/d/12VXMl6RQcz87OWPxXJsB_Nb0MdimsTiG/view?usp=sharing) \| [Baidu](https://pan.baidu.com/s/1ZXn-fhmeL6AsveV2G3n5Jg) (key: 01jh) | | [CenterPoint + Focals Conv (multi-modal) - 1/4 data](CenterPoint/configs/nusc/voxelnet/nusc_centerpoint_voxelnet_0075voxel_fix_bn_z_focal_multimodal_1_4_data.py) | 62.15 | 67.45 | [Google](https://drive.google.com/file/d/1HC3nTEE8GVhInquwRd9hRJPSsZZylR58/view?usp=sharing) \| [Baidu](https://pan.baidu.com/s/1tKlO4GgzjXojzjzpoJY_Ng) (key: 6qsc) | Visualization of voxel distribution of Focals Conv on KITTI val dataset:

## Getting Started ### Installation #### a. Clone this repository ```shell https://github.com/dvlab-research/FocalsConv && cd FocalsConv ``` #### b. Install the environment Following the install documents for [OpenPCdet](OpenPCDet/docs/INSTALL.md) and [CenterPoint](CenterPoint/docs/INSTALL.md) codebases respectively, based on your preference. *spconv 2.x is highly recommended instead of spconv 1.x version. #### c. Prepare the datasets. Download and organize the official [KITTI](OpenPCDet/docs/GETTING_STARTED.md) and [Waymo](OpenPCDet/docs/GETTING_STARTED.md) following the document in OpenPCdet, and [nuScenes](CenterPoint/docs/NUSC.md) from the CenterPoint codebase. *Note that for nuScenes dataset, we use image-level gt-sampling (copy-paste) in the multi-modal training. Please download this [dbinfos_train_10sweeps_withvelo.pkl](https://drive.google.com/file/d/1ypJKpZifM-NsGdUSLMFpBo-KaXlfpplR/view?usp=sharing) to replace the original one. ([Google](https://drive.google.com/file/d/1ypJKpZifM-NsGdUSLMFpBo-KaXlfpplR/view?usp=sharing) \| [Baidu](https://pan.baidu.com/s/1iz1KWthc1XhXG3du3QG__w) (key: b466)) *Note that for nuScenes dataset, we conduct ablation studies on a 1/4 data training split. Please download [infos_train_mini_1_4_10sweeps_withvelo_filter_True.pkl](https://drive.google.com/file/d/19-Zo8o0OWZYed0UpnOfDqTY5oLXKJV9Q/view?usp=sharing) if you needed for training. ([Google](https://drive.google.com/file/d/19-Zo8o0OWZYed0UpnOfDqTY5oLXKJV9Q/view?usp=sharing) \| [Baidu](https://pan.baidu.com/s/1VbkNBs155JyJLhNtSlbEGQ) (key: 769e)) #### d. Download pre-trained models. If you want to directly evaluate the trained models we provide, please download them first. If you want to train by yourselvef, for multi-modal settings, please download this resnet pre-train model first, [torchvision-res50-deeplabv3](https://download.pytorch.org/models/deeplabv3_resnet50_coco-cd0a2569.pth). ### Evaluation We provide the trained weight file so you can just run with that. You can also use the model you trained. For models in OpenPCdet, ```shell NUM_GPUS=8 cd tools bash scripts/dist_test.sh ${NUM_GPUS} --cfg_file cfgs/kitti_models/voxel_rcnn_car_focal_multimodal.yaml --ckpt path/to/voxelrcnn_focal_multimodal.pth bash scripts/dist_test.sh ${NUM_GPUS} --cfg_file cfgs/kitti_models/pv_rcnn_focal_multimodal.yaml --ckpt ../pvrcnn_focal_multimodal.pth bash scripts/dist_test.sh ${NUM_GPUS} --cfg_file cfgs/kitti_models/pv_rcnn_focal_lidar.yaml --ckpt path/to/pvrcnn_focal_lidar.pth ``` For models in CenterPoint, ```shell CONFIG="nusc_centerpoint_voxelnet_0075voxel_fix_bn_z_focal_multimodal" python -m torch.distributed.launch --nproc_per_node=${NUM_GPUS} ./tools/dist_test.py configs/nusc/voxelnet/$CONFIG.py --work_dir ./work_dirs/$CONFIG --checkpoint centerpoint_focal_multimodal.pth ``` ### Training For configures in OpenPCdet, ```shell bash scripts/dist_train.sh ${NUM_GPUS} --cfg_file cfgs/kitti_models/CONFIG.yaml ``` For configures in CenterPoint, ```shell python -m torch.distributed.launch --nproc_per_node=${NUM_GPUS} ./tools/train.py configs/nusc/voxelnet/$CONFIG.py --work_dir ./work_dirs/CONFIG ``` * Note that we use 8 GPUs to train OpenPCdet models and 4 GPUs to train CenterPoint models. ## TODO List - - [ ] Config files and trained models on the overall Waymo dataset. - - [ ] Config files and scripts for the test augs (double-flip and rotation) in nuScenes test submission. - - [ ] Results and models of Focals Conv Networks on 3D Segmentation datasets. ## Citation If you find this project useful in your research, please consider citing: ``` @inproceedings{focalsconv-chen, title={Focal Sparse Convolutional Networks for 3D Object Detection}, author={Chen, Yukang and Li, Yanwei and Zhang, Xiangyu and Sun, Jian and Jia, Jiaya}, booktitle={Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition}, year={2022} } ``` ## Acknowledgement - This work is built upon the `OpenPCDet` and `CenterPoint`. Please refer to the official github repositories, [OpenPCDet](https://github.com/open-mmlab/OpenPCDet) and [CenterPoint](https://github.com/tianweiy/CenterPoint) for more information. - This README follows the style of [IA-SSD](https://github.com/yifanzhang713/IA-SSD). ## License This project is released under the [Apache 2.0 license](LICENSE). ## Related Repos 1. [spconv](https://github.com/traveller59/spconv) ![GitHub stars](https://img.shields.io/github/stars/traveller59/spconv.svg?style=flat&label=Star) 2. [Deformable Conv](https://github.com/msracver/Deformable-ConvNets) ![GitHub stars](https://img.shields.io/github/stars/msracver/Deformable-ConvNets.svg?style=flat&label=Star) 3. [Submanifold Sparse Conv](https://github.com/facebookresearch/SparseConvNet) ![GitHub stars](https://img.shields.io/github/stars/facebookresearch/SparseConvNet.svg?style=flat&label=Star)