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Label-efficient LiDAR-based 3D object detection is currently dominated by weakly/semi-supervised methods. Instead of exclusively following one of them, we propose MixSup, a more practical paradigm simultaneously utilizing massive cheap…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Yuxue Yang , Lue Fan , Zhaoxiang Zhang

Object detection and semantic segmentation with the 3D lidar point cloud data require expensive annotation. We propose a data augmentation method that takes advantage of already annotated data multiple times. We propose an augmentation…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Petr Šebek , Šimon Pokorný , Patrik Vacek , Tomáš Svoboda

Accurate ground truth annotations are critical to supervised learning and evaluating the performance of autonomous vehicle systems. These vehicles are typically equipped with active sensors, such as LiDAR, which scan the environment in…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Alexandre Justo Miro , Ludvig af Klinteberg , Bogdan Timus , Aron Asefaw , Ajinkya Khoche , Thomas Gustafsson , Sina Sharif Mansouri , Masoud Daneshtalab

The image-based 3D object detection task expects that the predicted 3D bounding box has a ``tightness'' projection (also referred to as cuboid), which fits the object contour well on the image while still keeping the geometric attribute on…

Computer Vision and Pattern Recognition · Computer Science 2023-09-13 Jieqi Shi , Peiliang Li , Xiaozhi Chen , Shaojie Shen

Accurately annotating multiple 3D objects in LiDAR scenes is laborious and challenging. While a few previous studies have attempted to leverage semi-automatic methods for cost-effective bounding box annotation, such methods have limitations…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Dongmin Choi , Wonwoo Cho , Kangyeol Kim , Jaegul Choo

This paper aims at high-accuracy 3D object detection in autonomous driving scenario. We propose Multi-View 3D networks (MV3D), a sensory-fusion framework that takes both LIDAR point cloud and RGB images as input and predicts oriented 3D…

Computer Vision and Pattern Recognition · Computer Science 2017-06-23 Xiaozhi Chen , Huimin Ma , Ji Wan , Bo Li , Tian Xia

Annotating 3D data remains a costly bottleneck for 3D object detection, motivating the development of weakly supervised annotation methods that rely on more accessible 2D box annotations. However, relying solely on 2D boxes introduces…

Computer Vision and Pattern Recognition · Computer Science 2025-09-10 Saad Lahlali , Alexandre Fournier Montgieux , Nicolas Granger , Hervé Le Borgne , Quoc Cuong Pham

Efficient data utilization is crucial for advancing 3D scene understanding in autonomous driving, where reliance on heavily human-annotated LiDAR point clouds challenges fully supervised methods. Addressing this, our study extends into…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Lingdong Kong , Xiang Xu , Jiawei Ren , Wenwei Zhang , Liang Pan , Kai Chen , Wei Tsang Ooi , Ziwei Liu

Training a deep object detector for autonomous driving requires a huge amount of labeled data. While recording data via on-board sensors such as camera or LiDAR is relatively easy, annotating data is very tedious and time-consuming,…

Robotics · Computer Science 2019-05-07 Di Feng , Xiao Wei , Lars Rosenbaum , Atsuto Maki , Klaus Dietmayer

3D object detection is a core perceptual challenge for robotics and autonomous driving. However, the class-taxonomies in modern autonomous driving datasets are significantly smaller than many influential 2D detection datasets. In this work,…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Benjamin Wilson , Zsolt Kira , James Hays

3D object detection has recently received much attention due to its great potential in autonomous vehicle (AV). The success of deep learning based object detectors relies on the availability of large-scale annotated datasets, which is…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Jinpeng Lin , Zhihao Liang , Shengheng Deng , Lile Cai , Tao Jiang , Tianrui Li , Kui Jia , Xun Xu

Point cloud segmentation is a fundamental task in 3D scene understanding. Its progress is constrained by the high cost and time required for dense 3D annotations, making labeled samples difficult to obtain. Beyond annotation scarcity,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Thenukan Pathmanathan , Kanchan Keisham , Thangarajah Akilan

In this paper, we focus on obtaining 2D and 3D labels, as well as track IDs for objects on the road with the help of a novel 3D Bounding Box Annotation Toolbox (3D BAT). Our open source, web-based 3D BAT incorporates several smart features…

Computer Vision and Pattern Recognition · Computer Science 2019-05-03 Walter Zimmer , Akshay Rangesh , Mohan Trivedi

We present an automatic annotation pipeline to recover 9D cuboids and 3D shapes from pre-trained off-the-shelf 2D detectors and sparse LIDAR data. Our autolabeling method solves an ill-posed inverse problem by considering learned shape…

Computer Vision and Pattern Recognition · Computer Science 2020-04-03 Sergey Zakharov , Wadim Kehl , Arjun Bhargava , Adrien Gaidon

3D LiDAR scanners are playing an increasingly important role in autonomous driving as they can generate depth information of the environment. However, creating large 3D LiDAR point cloud datasets with point-level labels requires a…

Computer Vision and Pattern Recognition · Computer Science 2018-04-03 Xiangyu Yue , Bichen Wu , Sanjit A. Seshia , Kurt Keutzer , Alberto L. Sangiovanni-Vincentelli

Recently, DEtection TRansformer (DETR), an end-to-end object detection pipeline, has achieved promising performance. However, it requires large-scale labeled data and suffers from domain shift, especially when no labeled data is available…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Jinze Yu , Jiaming Liu , Xiaobao Wei , Haoyi Zhou , Yohei Nakata , Denis Gudovskiy , Tomoyuki Okuno , Jianxin Li , Kurt Keutzer , Shanghang Zhang

Recently, LiDAR point cloud processing and analysis have made great progress due to the development of 3D Transformers. However, existing 3D Transformer methods usually are computationally expensive and inefficient due to their huge and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Dening Lu , Jun Zhou , Kyle , Gao , Linlin Xu , Jonathan Li

Unsupervised and open-vocabulary 3D object detection has recently gained attention, particularly in autonomous driving, where reducing annotation costs and recognizing unseen objects are critical for both safety and scalability. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 In-Jae Lee , Mungyeom Kim , Kwonyoung Ryu , Pierre Musacchio , Jaesik Park

Manual annotation of bounding boxes for object detection in digital images is tedious, and time and resource consuming. In this paper, we propose a semi-automatic method for efficient bounding box annotation. The method trains the object…

Machine Learning · Computer Science 2020-07-03 Bishwo Adhikari , Heikki Huttunen

Detecting road features is a key enabler for autonomous driving and localization. For instance, a reliable detection of poles which are widespread in road environments can improve localization. Modern deep learning-based perception systems…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Maxime Noizet , Philippe Xu , Philippe Bonnifait