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To safely deploy autonomous vehicles, onboard perception systems must work reliably at high accuracy across a diverse set of environments and geographies. One of the most common techniques to improve the efficacy of such systems in new…

Computer Vision and Pattern Recognition · Computer Science 2021-03-04 Benjamin Caine , Rebecca Roelofs , Vijay Vasudevan , Jiquan Ngiam , Yuning Chai , Zhifeng Chen , Jonathon Shlens

A common classification task situation is where one has a large amount of data available for training, but only a small portion is annotated with class labels. The goal of semi-supervised training, in this context, is to improve…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Zijian Hu , Zhengyu Yang , Xuefeng Hu , Ram Nevatia

Semi-supervised learning (SSL) has achieved great success in leveraging a large amount of unlabeled data to learn a promising classifier. A popular approach is pseudo-labeling that generates pseudo labels only for those unlabeled data with…

Computer Vision and Pattern Recognition · Computer Science 2022-12-29 Qinyi Deng , Yong Guo , Zhibang Yang , Haolin Pan , Jian Chen

Unsupervised object re-identification targets at learning discriminative representations for object retrieval without any annotations. Clustering-based methods conduct training with the generated pseudo labels and currently dominate this…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Xiao Zhang , Yixiao Ge , Yu Qiao , Hongsheng Li

In fine-grained road scene understanding, semantic segmentation plays a crucial role in enabling vehicles to perceive and comprehend their surroundings. By assigning a specific class label to each pixel in an image, it allows for precise…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Yuting Hong , Yongkang Wu , Hui Xiao , Huazheng Hao , Xiaojie Qiu , Baochen Yao , Chengbin Peng

Pseudo-labeling is a popular semi-supervised learning technique to leverage unlabeled data when labeled samples are scarce. The generation and selection of pseudo-labels heavily rely on labeled data. Existing approaches implicitly assume…

Machine Learning · Computer Science 2024-06-21 Nabeel Seedat , Nicolas Huynh , Fergus Imrie , Mihaela van der Schaar

While existing semi-supervised object detection (SSOD) methods perform well in general scenes, they encounter challenges in handling oriented objects in aerial images. We experimentally find three gaps between general and oriented object…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Chenxu Wang , Chunyan Xu , Ziqi Gu , Zhen Cui

Training with sparse annotations is known to reduce the performance of object detectors. Previous methods have focused on proxies for missing ground truth annotations in the form of pseudo-labels for unlabeled boxes. We observe that…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 Saksham Suri , Sai Saketh Rambhatla , Rama Chellappa , Abhinav Shrivastava

Pseudo-supervised learning methods have been shown to be effective for weakly supervised object localization tasks. However, the effectiveness depends on the powerful regularization ability of deep neural networks. Based on the assumption…

Computer Vision and Pattern Recognition · Computer Science 2022-03-21 Kangbo Sun , Jie Zhu

Pseudo-labeling (PL) has been shown to be effective in semi-supervised automatic speech recognition (ASR), where a base model is self-trained with pseudo-labels generated from unlabeled data. While PL can be further improved by iteratively…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-17 Yosuke Higuchi , Niko Moritz , Jonathan Le Roux , Takaaki Hori

The recent research in semi-supervised learning (SSL) is mostly dominated by consistency regularization based methods which achieve strong performance. However, they heavily rely on domain-specific data augmentations, which are not easy to…

Machine Learning · Computer Science 2021-04-20 Mamshad Nayeem Rizve , Kevin Duarte , Yogesh S Rawat , Mubarak Shah

Semi-supervised learning, i.e. jointly learning from labeled and unlabeled samples, is an active research topic due to its key role on relaxing human supervision. In the context of image classification, recent advances to learn from…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 Eric Arazo , Diego Ortego , Paul Albert , Noel E. O'Connor , Kevin McGuinness

Current 3D object detection methods heavily rely on an enormous amount of annotations. Semi-supervised learning can be used to alleviate this issue. Previous semi-supervised 3D object detection methods directly follow the practice of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-16 Xiaopei Wu , Yang Zhao , Liang Peng , Hua Chen , Xiaoshui Huang , Binbin Lin , Haifeng Liu , Deng Cai , Wanli Ouyang

Point annotations are considerably more time-efficient than bounding box annotations. However, how to use cheap point annotations to boost the performance of semi-supervised object detection remains largely unsolved. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Yongtao Ge , Qiang Zhou , Xinlong Wang , Zhibin Wang , Hao Li , Chunhua Shen

Self-supervised vision transformers (SSTs) have shown great potential to yield rich localization maps that highlight different objects in an image. However, these maps remain class-agnostic since the model is unsupervised. They often tend…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Shakeeb Murtaza , Soufiane Belharbi , Marco Pedersoli , Aydin Sarraf , Eric Granger

Semi-supervised multi-label learning (SSMLL) is a powerful framework for leveraging unlabeled data to reduce the expensive cost of collecting precise multi-label annotations. Unlike semi-supervised learning, one cannot select the most…

Machine Learning · Computer Science 2024-12-30 Jia-Hao Xiao , Ming-Kun Xie , Heng-Bo Fan , Gang Niu , Masashi Sugiyama , Sheng-Jun Huang

Semi-supervised 3D object detection (SS3DOD) aims to reduce costly 3D annotations utilizing unlabeled data. Recent studies adopt pseudo-label-based teacher-student frameworks and demonstrate impressive performance. The main challenge of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Taehun Kong , Tae-Kyun Kim

We motivate weakly supervised learning as an effective learning paradigm for problems where curating perfectly annotated datasets is expensive and may require domain expertise such as fine-grained classification. We focus on Partial Label…

Computer Vision and Pattern Recognition · Computer Science 2025-06-09 Darshana Saravanan , Naresh Manwani , Vineet Gandhi

Pseudo-labeling is a key component in semi-supervised learning (SSL). It relies on iteratively using the model to generate artificial labels for the unlabeled data to train against. A common property among its various methods is that they…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Islam Nassar , Samitha Herath , Ehsan Abbasnejad , Wray Buntine , Gholamreza Haffari

Semi-supervised semantic segmentation methods leverage unlabeled data by pseudo-labeling them. Thus the success of these methods hinges on the reliablility of the pseudo-labels. Existing methods mostly choose high-confidence pixels in an…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Prantik Howlader , Hieu Le , Dimitris Samaras