The DOI matches its Crossref record; 83 of the 91 references it cites were found in a registry or an index.
FocalFormer3D : Focusing on Hard Instance for 3D Object Detection
Open accessAbstract
False negatives (FN) in 3D object detection, e.g., missing predictions of pedestrians, vehicles, or other obstacles, can lead to potentially dangerous situations in autonomous driving. While being fatal, this issue is understudied in many current 3D detection methods. In this work, we propose Hard Instance Probing (HIP), a general pipeline that identifies FN in a multi-stage manner and guides the models to focus on excavating difficult instances. For 3D object detection, we instantiate this method as FocalFormer3D, a simple yet effective detector that excels at excavating difficult objects and improving prediction recall. FocalFormer3D features a multi-stage query generation to discover hard objects and a box-level transformer decoder to efficiently distinguish objects from massive object candidates. Experimental results on the nuScenes and Waymo datasets validate the superior performance of FocalFormer3D. The advantage leads to strong performance on both detection and tracking, in both LiDAR and multi-modal settings. Notably, FocalFormer3D achieves a 70.5 mAP and 73.9 NDS on nuScenes detection benchmark, while the nuScenes tracking benchmark shows 72.1 AMOTA, both ranking 1st place on the nuScenes LiDAR leaderboard. Our code is available at https://github.com/NVlabs/FocalFormer3D.
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“In contrast, radarcamera fusion enhances motion detection by leveraging radar velocity information, with RCBEVDet++ [263] demonstrating greater stability in dynamic scenes, such as high-speed driving and urban intersections.”
From Multimodal fusion and vision–language models: A survey for robot vision (2026) · cites this paper as [263]
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End-to-End Object Detection with Transformers
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“…detected objects ( Positive predictions) at k -th stage are We are then allowed to classify the ground-truth objects according to their assigned candidates: where an object matching metric σ ( · , · ) (e.g. Intersection over Union [60, 61] and center distance [62]) and a prede-fined threshold η .”
BackgroundPointNet++: Deep Hierarchical Feature Learning on Point Sets in a Metric SpacePreprint
Qi, C. R., Yi, L., Su, H., & Guibas, L. J. (2017) · arXiv (Cornell University) · doi:10.48550/arxiv.1706.02413 · Cited by 10,099 · cited 1×
“…LiDAR-based [1– 3, 12, 13, 22–29], or Camera-based [30–37], or Multi-Modal [4–8 , 38– 45] 3D object detectors Different from dense detectors, point-based 3D detectors [11, 50–52] directly process point clouds via Point-Net [53, 54] and perform grouping or predictions on the sparse representations.”
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Charles, R., Su, H., Mo, K., & Guibas, L. J. (2017) · IEEE Computer Society Conference on Computer Vision and Pattern Recognition/Proceedings - IEEE Computer Society Conference on Computer Vision and Pattern Recognition/Proceedings · doi:10.1109/cvpr.2017.16 · Cited by 10,029 · cited 1×
“…LiDAR-based [1– 3, 12, 13, 22–29], or Camera-based [30–37], or Multi-Modal [4–8 , 38– 45] 3D object detectors Different from dense detectors, point-based 3D detectors [11, 50–52] directly process point clouds via Point-Net [53, 54] and perform grouping or predictions on the sparse representations.”
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- Roddick, Orthographic feature transform for monocular 3d object detection
- 10.1007/978-3-031-20077-9_1 · DOI · Paper page
- 10.1109/tpami.2023.3333838/mm1 · DOI
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Multimodal fusion and vision–language models: A survey for robot vision
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“For the detection results, the mAP, NDS, and mAVE scores are reported, while the tracking results use the AMOTA, AMOTP, and IDS metrics.”
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A review of 3D object detection based on autonomous driving
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“Chen et al. [112] proposed FocalFormer3D to solve the False Neg-atives problem.”
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“This dataset suffers from class imbalance, which makes the detection task more challenging. b) SemanticKITTI: The SemanticKITTI [31] dataset contains 23k training samples and 20k testing samples in autonomous driving scenes with panoptic segmentation annotations for 8 thing and 12 stuff classes.”
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“[32] focuses on false negative examples by using heatmap prediction to excavate hard samples and omitting the training of easy positive candidates.”
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Teleoperating Autonomous Vehicles Over Commercial 5G Networks: Are We There Yet?
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“However, the distribution has a long tail, with 72.3% of the frames with delay between 50 and 100 ms, 16.2% with delay between 100 ms and 500 ms, and 8.7% with a network delay larger than 500 ms. Perceptual Quality Deviation .”
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Chan, S., Duan, B., Fan, X., et al. (2025) · doi:10.1109/ijcnn64981.2025.11229135 · Cited by 1
PLPFusion: Plane-Line-Pixel Fully Sparse Fusion for Robust Multi-Modal 3D Object Detection
Hou, J., Song, H., Li, J. W., Lin, Y., Huang, T., He, J., He, X., & Yang, J. (2025) · IEEE Transactions on Circuits and Systems for Video Technology · doi:10.1109/tcsvt.2025.3644414 · Cited by 2
DepthFusion: Depth-Aware Hybrid Feature Fusion for LiDAR-Camera 3D Object Detection
Ji, M., Yang, J. J., & Zhang, S. (2026) · IEEE Transactions on Multimedia · doi:10.1109/tmm.2026.3668596 · Cited by 1
A Bayesian Multiobject Tracking Approach with Neural-Enhanced Motion and Measurement Models
Wei, S., Liang, M., & Meyer, F. (2025) · 2018 52nd Asilomar Conference on Signals, Systems, and Computers · doi:10.1109/ieeeconf67917.2025.11443878 · Cited by 1
SFMNet: Sparse Focal Modulation for 3D Object Detection
Shrout, O., & Tal, A. (2026) · IEEE Winter Conference on Applications of Computer Vision · doi:10.1109/wacv61042.2026.00608 · Cited by 1
“To mitigate this, VoTr [31] implements local and dilated attention, focusing on sparse voxel interactions.”
Cheong, B., Wang, L., Papais, S., & Waslander, S. L. (2026) · IEEE Winter Conference on Applications of Computer Vision · doi:10.1109/wacv61042.2026.00325 · Cited by 1
Online Monitoring Framework for Automotive Time Series Data using JEPA Embeddings
Fertig, A., Sekaran, K. C., Balasubramanian, L., et al. (2026) · IEEE Intelligent Vehicles Symposium · doi:10.1109/iv66570.2026.11624095 · Cited by 1
“The error on the feature f is denoted as ϑ f ∈ R and drawn for each object from a feature-specific normal distribution N ( µ f , σ 2 f ) . to For instance, if a sampled error ϑ v is applied the velocity feature v at the specific timestep t ∈ + , this is formulated as: v [ t ] + ϑ v .”
NIV-SSD: Neighbor IoU-voting single-stage object detector from point cloud
Liu, S., Wang, D., Wang, Q., & Huang, K. (2024) · Neurocomputing · doi:10.1016/j.neucom.2024.127987 · Cited by 1
Camera-Radar-Based Adaptive Cross Attention Fusion for Multimodal Object Detection
Jhong, S.-Y., Chang, W., Hsu, H.-C., et al. (2024) · International Automatic Control Conference · doi:10.1109/cacs63404.2024.10773133 · Cited by 1
Self-citationRet3D: rethinking object relations for efficient 3D object detection
Wu, Y., ZHANG, D., Liu, Y., ZHANG, L., & Cheng, M. (2025) · Scientia Sinica Informationis · doi:10.1360/ssi-2024-0295 · Cited by 1
Valeo4Cast: A Modular Approach to End-to-End Forecasting
Xu, Y., Zablocki, É., Boulch, A., Puy, G., Chen, M., Bartoccioni, F., Samet, N., Siméoni, O., Gidaris, S., Vu, T.-H., et al. (2025) · Lecture notes in computer science · doi:10.1007/978-3-031-91767-7_1 · Cited by 1
IRBEVF-Q: Optimization of Image–Radar Fusion Algorithm Based on Bird’s Eye View Features
Cai, G., Chen, F., & Guo, E. (2024) · Sensors · doi:10.3390/s24144602
Focusing 3D Small Objects with Object Matching Set Abstraction
Guo, L., Song, N., Hu, J., Han, H., Han, X., & Xiong, F. (2025) · Applied Sciences · doi:10.3390/app15084121
Data Fusion-Based Joint 3D Object Detection Using Point Clouds and Images
Lyu, J., Wang, S., Qi, Y., et al. (2025) · Electronics · doi:10.3390/electronics14122414
Cai, C., Yan, H., Huang, Y., et al. (2025) · doi:10.1109/aaicv66571.2025.00007
Towards generalizable and interpretable three-dimensional tracking with inverse neural rendering
Ost, J., Banerjee, T., Bijelic, M., et al. (2025) · Nature Machine Intelligence · doi:10.1038/s42256-025-01083-x
Explore the LiDAR-Camera Dynamic Adjustment Fusion for 3D Object Detection
Yang, Y., Gao, X., Wang, T., Hao, X., Shi, Y., Tan, X., & Ye, X. (2025) · Proceedings - IEEE International Conference on Robotics and Automation/Proceedings · doi:10.1109/icra55743.2025.11128091
ImVoxelENet: Image to Voxels Epipolar Transformer for Multi-View RGB-Based 3D Object Detection
Xu, G., Liu, H., Leng, B., et al. (2025) · Computational Visual Media · doi:10.26599/cvm.2025.9450504
MGAF: LiDAR-Camera 3D Object Detection With Multiple Guidance and Adaptive Fusion
Fan, B., Li, X., Zhou, Y., Xia, C., Fan, H., Xu, F., & Tian, J. (2025) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/tpami.2025.3612958
Simpler Is Better: Revisiting Doppler Velocity for Enhanced Moving Object Tracking with FMCW LiDAR
Zeng, Y., Wu, T., Qi, S., Li, J., Duan, X., & Yu, Y. (2025) · IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) · doi:10.1109/iros60139.2025.11246618
“To obtain accurate spatial information on objects, state-of-the-art 3D Multi-Object Tracking (MOT) methods primarily rely on the three-dimensional point clouds provided by TOF LiDAR as input [6], [7], [8].”
Bayesian Multiobject Tracking With Neural-Enhanced Motion and Measurement Models
Wei, S., Liang, M., & Meyer, F. (2026) · IEEE Transactions on Signal Processing · doi:10.1109/tsp.2026.3654026
“The ROI is identified on the BEV feature map [60], [61], [62] in R 180 × 180 × 128 corresponding to raw measurement from time k − 1 .”
InfluentialBidirectional Supervised Fusion for Cross-Modal 3D Object Detection in Autonomous DrivingPreprint
Yue, S., Liu, J., Hao, W., Zhou, S., & cai, Y. (2026) · SSRN Electronic Journal · doi:10.2139/ssrn.6205840
RG-Attn: Radian Glue Attention for Multi-Modal Multi-Agent Cooperative Perception
Li, L., Yang, K., Zhang, W., Wang, X., & Sun, C. (2025) · IEEE International Conference on Computer Vision Workshops · doi:10.1109/iccvw69036.2025.00187
“Transformer structures, such as ViT and Point-Transformer [14], [15], have further elevated the performance of both single-modality tracks, ushering in a new era.”
ID-SSLNet: Intensity Difference-Based Semi-Solid-State LiDAR Planar Markers Detection Network
Chen, Z., Zhang, Z., Pan, S., Tao, X., & Gao, W. (2026) · IEEE Sensors Journal · doi:10.1109/jsen.2026.3665301
“However, due to the availability and widespread adoption of mainstream datasets [2], [3], [4], most current LiDAR-based object detection studies primarily focus on mechanical LiDAR characteristics [5], [6], [7].”
StreamCMT: Prior-Guided Multimodal Temporal Fusion for Sparse 3D Object Detection
Huang, Y., & Yuansheng, L. I. U. (2026) · IEEE Robotics and Automation Letters · doi:10.1109/lra.2026.3671538
MVOD - A Multi-View Fusion Network for 3D Obstacle Detection with Point Clouds and Images
Wang, J., Wang, Z., Mi, H., et al. (2025) · International Conference on Robotics, Automation and Artificial Intelligence (RAAI) · doi:10.1109/raai67517.2025.11423379
Surface3D: A Surface-Aware Framework for Refining 3D Object Detection
Liu, M., Hou, Y., Yurtsever, E., Zhou, X., Zhang, J., Zhang, H., & Knoll, A. (2025) · IEEE International Conference on Intelligent Transportation Systems (ITSC) · doi:10.1109/itsc60802.2025.11423169
“Nevertheless, current state-of-the-art 3D detection architectures [6], [8]– [10] often overlook surface-level information or focus on reconstructing entire vehicle structures [11], [12], resulting in inefficient and computationally expensive methods.”
Target-aware proposal-level fusion for multi-modal three-dimensional detection
Zhao, Z., Wu, B., Yin, Y., Zhang, J., Li, Y., Zeng, Y., & Gao, H. (2026) · Engineering Applications of Artificial Intelligence · doi:10.1016/j.engappai.2026.114576
AMTFusion: Boosting 3D Object Detection by Adaptive Multi-Modal Temporal Fusion and Augmentation
Tian, W., Du, Z., Zhao, X., & Yu, Q. (2026) · IEEE Transactions on Circuits and Systems for Video Technology · doi:10.1109/tcsvt.2026.3679483
Occlusion Aware Graph Transforemr for 3D Multi-Object Tracking
Wei, J., Gao, H., Nie, J., Cai, Z., & Liu, Y. (2026) · IEEE International Conference on Acoustics Speech and Signal Processing · doi:10.1109/icassp55912.2026.11463703
He, Y., Zhao, L., Deng, T., Fang, Z., & Chen, W. (2026) · IEEE Transactions on Instrumentation and Measurement · doi:10.1109/tim.2026.3687354 · Cited by 1
Beyond Sparsity: Receptive Field Expansion and Cross-Task Fusion for LiDAR Multi-Task Perception
Huang, S., Zhang, R., Liu, S., Bian, Y., & Qin, X. (2026) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/tpami.2026.3688337
“InFocalFormer3D[25],theattentionmechanismdiscoversthese hard-to-detectobjectsthroughmulti-stagequerygenerationand effectivelydistinguishesnumerouscandidateproposalsviaa box-leveltransformerdecoder.”
Wang, S., Zheng, X., Zhang, Y. J., Ran, S., Lan, R., & Zhu, H. (2025) · China Automation Congress (CAC) · doi:10.1109/cac67268.2025.11487542
Metadata
- Authors
- Chen, Y., Yu, Z., Chen, Y., Lan, S., Anandkumar, A., Jia, J., & Alvarez, J. M.
- Affiliations
- Chinese University of Hong Kong (HK)
- Nvidia (United Kingdom) (GB)
- Caltech
- NVIDIA
- Venue
- 2023 IEEE/CVF International Conference on Computer Vision (ICCV)
- Publisher
- IEEE
- Published
- 2023-10-01
- Pages
- 8360-8371
- OpenAlex
- W4390872444
- Semantic Scholar
- ef80a308b548f582ac52419dffaa48f53db8a4f8
- Cited by
- 119
- References
- 91
- Citations by year
- 2026: 35 · 2025: 53 · 2024: 30 · 2023: 1
- FWCI
- 12.73
- Type
- conference paper
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- IEEE/CVF International Conference on Computer Vision (ICCV) (publishedVersion)
- arXiv (Cornell University) (submittedVersion, cc-by-nc-nd)
- Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Neural Network Applications
- Physical Sciences › Engineering › Automotive Engineering › Autonomous Vehicle Technology and Safety
- Physical Sciences › Computer Science › Computer Graphics and Computer-Aided Design › 3D Shape Modeling and Analysis
- Keywords
- 3D object detection, false negative reduction, LiDAR, autonomous driving, object tracking, multimodal detection, nuScenes, Waymo
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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