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We present a new domain adaptive self-training pipeline, named ST3D, for unsupervised domain adaptation on 3D object detection from point clouds. First, we pre-train the 3D detector on the source domain with our proposed random object…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Jihan Yang , Shaoshuai Shi , Zhe Wang , Hongsheng Li , Xiaojuan Qi

The performance of existing point cloud-based 3D object detection methods heavily relies on large-scale high-quality 3D annotations. However, such annotations are often tedious and expensive to collect. Semi-supervised learning is a good…

Computer Vision and Pattern Recognition · Computer Science 2021-03-18 Na Zhao , Tat-Seng Chua , Gim Hee Lee

Recent development of object detection mainly depends on deep learning with large-scale benchmarks. However, collecting such fully-annotated data is often difficult or expensive for real-world applications, which restricts the power of deep…

Computer Vision and Pattern Recognition · Computer Science 2020-02-19 Hao Chen , Yali Wang , Guoyou Wang , Xiang Bai , Yu Qiao

Estimating 3D hand and object pose from a single image is an extremely challenging problem: hands and objects are often self-occluded during interactions, and the 3D annotations are scarce as even humans cannot directly label the…

Computer Vision and Pattern Recognition · Computer Science 2021-06-10 Shaowei Liu , Hanwen Jiang , Jiarui Xu , Sifei Liu , Xiaolong Wang

It is challenging to train a robust object detector under the supervised learning setting when the annotated data are scarce. Thus, previous approaches tackling this problem are in two categories: semi-supervised learning models that…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Guanghan Ning , Guang Chen , Chaowei Tan , Si Luo , Liefeng Bo , Heng Huang

3D instance segmentation methods often require fully-annotated dense labels for training, which are costly to obtain. In this paper, we present ClickSeg, a novel click-level weakly supervised 3D instance segmentation method that requires…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Leyao Liu , Tao Kong , Minzhao Zhu , Jiashuo Fan , Lu Fang

We have seen significant leapfrog advancement in machine learning in recent decades. The central idea of machine learnability lies on constructing learning algorithms that learn from good data. The availability of more data being made…

Computer Vision and Pattern Recognition · Computer Science 2020-08-07 Ng Hui Xian Lynnette , Henry Ng Siong Hock , Nguwi Yok Yen

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

3D instance segmentation is crucial for understanding complex 3D environments, yet fully supervised methods require dense point-level annotations, resulting in substantial annotation costs and labor overhead. To mitigate this, box-level…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Youngju Yoo , Seho Kim , Changick Kim

Camouflaged Object Detection (COD) demands models to expeditiously and accurately distinguish objects which conceal themselves seamlessly in the environment. Owing to the subtle differences and ambiguous boundaries, COD is not only a…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Huafeng Chen , Dian Shao , Guangqian Guo , Shan Gao

Open-vocabulary 3D Object Detection (OV-3DDet) aims to detect objects from an arbitrary list of categories within a 3D scene, which remains seldom explored in the literature. There are primarily two fundamental problems in OV-3DDet, i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-05 Yang Cao , Yihan Zeng , Hang Xu , Dan Xu

3D object part segmentation is essential in computer vision applications. While substantial progress has been made in 2D object part segmentation, the 3D counterpart has received less attention, in part due to the scarcity of annotated 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Anh Thai , Weiyao Wang , Hao Tang , Stefan Stojanov , Matt Feiszli , James M. Rehg

Reducing the quantity of annotations required for supervised training is vital when labels are scarce and costly. This reduction is especially important for semantic segmentation tasks involving 3D datasets that are often significantly…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Andrej Janda , Brandon Wagstaff , Edwin G. Ng , Jonathan Kelly

Accurate school detection is essential for supporting education initiatives, including infrastructure planning and expanding internet connectivity to underserved areas. However, many regions around the world face challenges due to outdated,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-06 Zakarya Elmimouni , Fares Fourati , Mohamed-Slim Alouini

3D semantic occupancy prediction offers an intuitive and efficient scene understanding and has attracted significant interest in autonomous driving perception. Existing approaches either rely on full supervision, which demands costly…

Computer Vision and Pattern Recognition · Computer Science 2026-01-23 Naiyu Fang , Zheyuan Zhou , Fayao Liu , Xulei Yang , Jiacheng Wei , Lemiao Qiu , Hongsheng Li , Guosheng Lin

Despite the remarkable accuracy of deep neural networks in object detection, they are costly to train and scale due to supervision requirements. Particularly, learning more object categories typically requires proportionally more bounding…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Alireza Zareian , Kevin Dela Rosa , Derek Hao Hu , Shih-Fu Chang

3D object detection from monocular images is an ill-posed problem due to the projective entanglement of depth and scale. To overcome this ambiguity, we present a novel self-supervised method for textured 3D shape reconstruction and pose…

Computer Vision and Pattern Recognition · Computer Science 2020-10-01 Deniz Beker , Hiroharu Kato , Mihai Adrian Morariu , Takahiro Ando , Toru Matsuoka , Wadim Kehl , Adrien Gaidon

Training deep models with limited annotations poses a significant challenge when applied to diverse practical domains. Employing semi-supervised learning alongside the self-supervised model offers the potential to enhance label efficiency.…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Ziting Wen , Oscar Pizarro , Stefan Williams

Medical image segmentation typically necessitates a large and precisely annotated dataset. However, obtaining pixel-wise annotation is a labor-intensive task that requires significant effort from domain experts, making it challenging to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Heng Cai , Lei Qi , Qian Yu , Yinghuan Shi , Yang Gao

Advancements in clinical treatment are increasingly constrained by the limitations of supervised learning techniques, which depend heavily on large volumes of annotated data. The annotation process is not only costly but also demands…

Computer Vision and Pattern Recognition · Computer Science 2024-05-20 Pranav Singh , Raviteja Chukkapalli , Shravan Chaudhari , Luoyao Chen , Mei Chen , Jinqian Pan , Craig Smuda , Jacopo Cirrone
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