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Related papers: DQS3D: Densely-matched Quantization-aware Semi-sup…

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Modern object detection architectures are moving towards employing self-supervised learning (SSL) to improve performance detection with related pretext tasks. Pretext tasks for monocular 3D object detection have not yet been explored yet in…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Sugirtha T , Sridevi M , Khailash Santhakumar , Hao Liu , B Ravi Kiran , Thomas Gauthier , Senthil Yogamani

Supervised object detection and semantic segmentation require object or even pixel level annotations. When there exist image level labels only, it is challenging for weakly supervised algorithms to achieve accurate predictions. The accuracy…

Computer Vision and Pattern Recognition · Computer Science 2018-03-06 Weifeng Ge , Sibei Yang , Yizhou Yu

Deep convolutional networks for semantic image segmentation typically require large-scale labeled data, e.g. ImageNet and MS COCO, for network pre-training. To reduce annotation efforts, self-supervised semantic segmentation is recently…

Computer Vision and Pattern Recognition · Computer Science 2018-01-31 Xiaohang Zhan , Ziwei Liu , Ping Luo , Xiaoou Tang , Chen Change Loy

Progress in self-supervised learning has brought strong general image representation learning methods. Yet so far, it has mostly focused on image-level learning. In turn, tasks such as unsupervised image segmentation have not benefited from…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Adrian Ziegler , Yuki M. Asano

3D object detection is essential for understanding 3D scenes. Contemporary techniques often require extensive annotated training data, yet obtaining point-wise annotations for point clouds is time-consuming and laborious. Recent…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Jiacheng Deng , Jiahao Lu , Tianzhu Zhang

Monocular 3D object detection is a low-cost but challenging task, as it requires generating accurate 3D localization solely from a single image input. Recent developed depth-assisted methods show promising results by using explicit depth…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Zizhang Wu , Yunzhe Wu , Jian Pu , Xianzhi Li , Xiaoquan Wang

3D Referring Expression Segmentation (3D-RES) typically requires extensive instance-level annotations, which are time-consuming and costly. Semi-supervised learning (SSL) mitigates this by using limited labeled data alongside abundant…

Computer Vision and Pattern Recognition · Computer Science 2025-04-18 Wenxin Chen , Mengxue Qu , Weitai Kang , Yan Yan , Yao Zhao , Yunchao Wei

LiDAR-produced point clouds are the major source for most state-of-the-art 3D object detectors. Yet, small, distant, and incomplete objects with sparse or few points are often hard to detect. We present Sparse2Dense, a new framework to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Tianyu Wang , Xiaowei Hu , Zhengzhe Liu , Chi-Wing Fu

We present a simple, yet effective, approach to Semi-Supervised Learning. Our approach is based on estimating density-based distances (DBD) using a shortest path calculation on a graph. These Graph-DBD estimates can then be used in any…

Machine Learning · Computer Science 2012-02-20 Avleen S. Bijral , Nathan Ratliff , Nathan Srebro

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

State-of-the-art 3D object detectors are usually trained on large-scale datasets with high-quality 3D annotations. However, such 3D annotations are often expensive and time-consuming, which may not be practical for real applications. A…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Chuandong Liu , Chenqiang Gao , Fangcen Liu , Pengcheng Li , Deyu Meng , Xinbo Gao

In this study, we dive deep into the inconsistency of pseudo targets in semi-supervised object detection (SSOD). Our core observation is that the oscillating pseudo-targets undermine the training of an accurate detector. It injects noise…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Xinjiang Wang , Xingyi Yang , Shilong Zhang , Yijiang Li , Litong Feng , Shijie Fang , Chengqi Lyu , Kai Chen , Wayne Zhang

This work considers semi-supervised segmentation as a dense prediction problem based on prototype vector correlation and proposes a simple way to represent each segmentation class with multiple prototypes. To avoid degenerate solutions, two…

Computer Vision and Pattern Recognition · Computer Science 2021-11-17 Jizong Peng , Christian Desrosiers , Marco Pedersoli

Quantization-aware training (QAT) starts with a pre-trained full-precision model and performs quantization during retraining. However, existing QAT works require supervision from the labels and they suffer from accuracy loss due to reduced…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Kaiqi Zhao , Ming Zhao

Monocular 3D object detection (M3OD) is a significant yet inherently challenging task in autonomous driving due to absence of explicit depth cues in a single RGB image. In this paper, we strive to boost currently underperforming monocular…

Computer Vision and Pattern Recognition · Computer Science 2023-11-08 Weijia Zhang , Dongnan Liu , Chao Ma , Weidong Cai

Self-supervised learning methods have witnessed a recent surge of interest after proving successful in multiple application fields. In this work, we leverage these techniques, and we propose 3D versions for five different self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Aiham Taleb , Winfried Loetzsch , Noel Danz , Julius Severin , Thomas Gaertner , Benjamin Bergner , Christoph Lippert

When developing Computer Aided Detection (CAD) systems for Digital Breast Tomosynthesis (DBT), the complexity arising from the volumetric nature of the modality poses significant technical challenges for obtaining large-scale accurate…

Computer Vision and Pattern Recognition · Computer Science 2024-09-26 Laurent Dillard , Hyeonsoo Lee , Weonsuk Lee , Tae Soo Kim , Ali Diba , Thijs Kooi

Semantic understanding of 3D point clouds is important for various robotics applications. Given that point-wise semantic annotation is expensive, in this paper, we address the challenge of learning models with extremely sparse labels. The…

Computer Vision and Pattern Recognition · Computer Science 2021-09-20 Liyi Luo , Beiwen Tian , Hao Zhao , Guyue Zhou

We address the problem of inferring self-supervised dense semantic correspondences between objects in multi-object scenes. The method introduces learning of class-aware dense object descriptors by providing either unsupervised discrete…

Robotics · Computer Science 2021-10-06 Denis Hadjivelichkov , Dimitrios Kanoulas

In this paper we consider the problem of semi-supervised learning with deep Convolutional Neural Networks (ConvNets). Semi-supervised learning is motivated on the observation that unlabeled data is cheap and can be used to improve the…

Computer Vision and Pattern Recognition · Computer Science 2016-06-13 Mehdi Sajjadi , Mehran Javanmardi , Tolga Tasdizen