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In this work, we focus on label efficient learning for video action detection. We develop a novel semi-supervised active learning approach which utilizes both labeled as well as unlabeled data along with informative sample selection for…

Computer Vision and Pattern Recognition · Computer Science 2024-04-04 Ayush Singh , Aayush J Rana , Akash Kumar , Shruti Vyas , Yogesh Singh Rawat

Weakly supervised point cloud semantic segmentation methods that require 1\% or fewer labels, hoping to realize almost the same performance as fully supervised approaches, which recently, have attracted extensive research attention. A…

Computer Vision and Pattern Recognition · Computer Science 2022-09-19 Tianfang Sun , Zhizhong Zhang , Xin Tan , Yanyun Qu , Yuan Xie , Lizhuang Ma

We present streaming self-training (SST) that aims to democratize the process of learning visual recognition models such that a non-expert user can define a new task depending on their needs via a few labeled examples and minimal domain…

Computer Vision and Pattern Recognition · Computer Science 2021-04-08 Zhiqiu Lin , Deva Ramanan , Aayush Bansal

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

Semi-supervised learning provides a solution to reduce the dependency of machine learning on labeled data. As one of the efficient semi-supervised techniques, self-training (ST) has received increasing attention. Several advancements have…

Machine Learning · Computer Science 2024-04-22 Jifeng Guo , Zhulin Liu , Tong Zhang , C. L. Philip Chen

Effectively utilizing the vast amounts of ego-centric navigation data that is freely available on the internet can advance generalized intelligent systems, i.e., to robustly scale across perspectives, platforms, environmental conditions,…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Jimuyang Zhang , Ruizhao Zhu , Eshed Ohn-Bar

Recent approaches leveraging multi-modal pre-trained models like CLIP for Unsupervised Domain Adaptation (UDA) have shown significant promise in bridging domain gaps and improving generalization by utilizing rich semantic knowledge and…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Tung-Long Vuong , Hoang Phan , Vy Vo , Anh Bui , Thanh-Toan Do , Trung Le , Dinh Phung

Learning visual knowledge from massive weakly-labeled web videos has attracted growing research interests thanks to the large corpus of easily accessible video data on the Internet. However, for video action recognition, the action of…

Computer Vision and Pattern Recognition · Computer Science 2021-01-12 Kunpeng Li , Zizhao Zhang , Guanhang Wu , Xuehan Xiong , Chen-Yu Lee , Zhichao Lu , Yun Fu , Tomas Pfister

We investigate the utility of in-domain self-supervised pre-training of vision models in the analysis of remote sensing imagery. Self-supervised learning (SSL) has emerged as a promising approach for remote sensing image classification due…

Computer Vision and Pattern Recognition · Computer Science 2024-02-06 Ivica Dimitrovski , Ivan Kitanovski , Nikola Simidjievski , Dragi Kocev

We propose a meta-learning method for semi-supervised learning that learns from multiple tasks with heterogeneous attribute spaces. The existing semi-supervised meta-learning methods assume that all tasks share the same attribute space,…

Machine Learning · Computer Science 2023-11-10 Tomoharu Iwata , Atsutoshi Kumagai

Self-training methods have been explored in recent years and have exhibited great performance in improving semi-supervised learning. This work presents a Simple instance-Adaptive self-Training method (SAT) for semi-supervised text…

Computation and Language · Computer Science 2022-10-25 Hui Chen , Wei Han , Soujanya Poria

Videos capture events that typically contain multiple sequential, and simultaneous, actions even in the span of only a few seconds. However, most large-scale datasets built to train models for action recognition in video only provide a…

Computer Vision and Pattern Recognition · Computer Science 2021-09-29 Mathew Monfort , Bowen Pan , Kandan Ramakrishnan , Alex Andonian , Barry A McNamara , Alex Lascelles , Quanfu Fan , Dan Gutfreund , Rogerio Feris , Aude Oliva

We are interested in representation learning from labeled or unlabeled data. Inspired by recent success of self-supervised learning (SSL), we develop a non-contrastive representation learning method that can exploit additional knowledge.…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Ajinkya Tejankar , Soroush Abbasi Koohpayegani , Hamed Pirsiavash

In semantic segmentation, the creation of pixel-level labels for training data incurs significant costs. To address this problem, semi-supervised learning, which utilizes a small number of labeled images alongside unlabeled images to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-09 Takahiro Mano , Reiji Saito , Kazuhiro Hotta

Human action or activity recognition in videos is a fundamental task in computer vision with applications in surveillance and monitoring, self-driving cars, sports analytics, human-robot interaction and many more. Traditional supervised…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Sharana Dharshikgan Suresh Dass , Hrishav Bakul Barua , Ganesh Krishnasamy , Raveendran Paramesran , Raphael C. -W. Phan

It is well known that for some tasks, labeled data sets may be hard to gather. Therefore, we wished to tackle here the problem of having insufficient training data. We examined learning methods from unlabeled data after an initial training…

Machine Learning · Computer Science 2018-04-06 Gal Hyams , Daniel Greenfeld , Dor Bank

In the field of semi-supervised medical image segmentation, the shortage of labeled data is the fundamental problem. How to effectively learn image features from unlabeled images to improve segmentation accuracy is the main research…

Computer Vision and Pattern Recognition · Computer Science 2023-10-11 Zhanhong Qiu , Haitao Gan , Ming Shi , Zhongwei Huang , Zhi Yang

Collecting and labeling the registered 3D point cloud is costly. As a result, 3D resources for training are typically limited in quantity compared to the 2D images counterpart. In this work, we deal with the data scarcity challenge of 3D…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Ping-Chung Yu , Cheng Sun , Min Sun

We present a new method to learn video representations from unlabeled data. Given large-scale unlabeled video data, the objective is to benefit from such data by learning a generic and transferable representation space that can be directly…

Computer Vision and Pattern Recognition · Computer Science 2019-06-10 AJ Piergiovanni , Anelia Angelova , Michael S. Ryoo

How can unlabeled video augment visual learning? Existing methods perform "slow" feature analysis, encouraging the representations of temporally close frames to exhibit only small differences. While this standard approach captures the fact…

Computer Vision and Pattern Recognition · Computer Science 2016-04-15 Dinesh Jayaraman , Kristen Grauman