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Paper · 2203.09780 · CVPR · 2022

Sparse Fuse Dense: Towards High Quality 3D Detection with Depth Completion

Deng Cai, Liang Peng, Liang Xie, Chenxi Huang, Chengqi Deng, Haifeng Liu, Xiaopei Wu, Honghui Yang

arXiv · PDF · Open in the Atlas

Code that ran

We lifted 13 functions out of this paper's own repositories and ran 5 of them in a sandbox. "Ran" means the function executed on a synthesized input and returned a value. It is not a reproduction of the paper's results.

RepositoryRoleRan
LittlePey/SFD canonical 5 of 13
FunctionStatusWhere it lives
get_lidar_in_image_fov Ran LittlePey/SFD/kitti_object.py
code served (permissive licence) · get_code("47397a2377a470c7")
random_flip_along_y Ran LittlePey/SFD/pcdet/datasets/augmentor/augmentor_utils_sfd.py
code served (permissive licence) · get_code("aa16fbdd4a5afcf1")
rotx Ran LittlePey/SFD/kitti_util.py
code served (permissive licence) · get_code("8843d80ab666c4e9")
roty Ran LittlePey/SFD/kitti_util.py
code served (permissive licence) · get_code("ae86074e10e1dfd7")
rotz Ran LittlePey/SFD/kitti_util.py
code served (permissive licence) · get_code("082920adf6e29c94")
cfg_from_yaml_file Not yet run LittlePey/SFD/pcdet/config.py
code served (permissive licence) · get_code("696fe155f9990d38")
depth_read Not yet run LittlePey/SFD/depth_to_lidar.py
code served (permissive licence) · get_code("40c0b7bcfe33fd6d")
get_corner_loss_lidar Not yet run LittlePey/SFD/pcdet/utils/loss_utils.py
code served (permissive licence) · get_code("1780d388cc532a6d")
get_global_grid_points_of_roi Not yet run LittlePey/SFD/pcdet/utils/loss_utils.py
code served (permissive licence) · get_code("269fcc858076aa5f")
get_gridify_iou3d_loss Not yet run LittlePey/SFD/pcdet/utils/loss_utils.py
code served (permissive licence) · get_code("f133fe553902b4ff")
global_rotation Not yet run LittlePey/SFD/pcdet/datasets/augmentor/augmentor_utils_sfd.py
code served (permissive licence) · get_code("79d4891f6b00a1cd")
merge_new_config Not yet run LittlePey/SFD/pcdet/config.py
code served (permissive licence) · get_code("392c0cf3a1b07b12")
random_flip_along_x Not yet run LittlePey/SFD/pcdet/datasets/augmentor/augmentor_utils_sfd.py
code served (permissive licence) · get_code("00692f8182ba51ca")

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Abstract

Current LiDAR-only 3D detection methods inevitably suffer from the sparsity of point clouds. Many multi-modal methods are proposed to alleviate this issue, while different representations of images and point clouds make it difficult to fuse them, resulting in suboptimal performance. In this paper, we present a novel multi-modal framework SFD (Sparse Fuse Dense), which utilizes pseudo point clouds generated from depth completion to tackle the issues mentioned above. Different from prior works, we propose a new RoI fusion strategy 3D-GAF (3D Grid-wise Attentive Fusion) to make fuller use of information from different types of point clouds. Specifically, 3D-GAF fuses 3D RoI features from the pair of point clouds in a grid-wise attentive way, which is more fine-grained and more precise. In addition, we propose a SynAugment (Synchronized Augmentation) to enable our multi-modal framework to utilize all data augmentation approaches tailored to LiDAR-only methods. Lastly, we customize an effective and efficient feature extractor CPConv (Color Point Convolution) for pseudo point clouds. It can explore 2D image features and 3D geometric features of pseudo point clouds simultaneously. Our method holds the highest entry on the KITTI car 3D object detection leaderboard † , demonstrating the effectiveness of our SFD. Code will be made publicly available.

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