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In recent years, semi-supervised learning (SSL) has shown tremendous success in leveraging unlabeled data to improve the performance of deep learning models, which significantly reduces the demand for large amounts of labeled data. Many SSL…

机器学习 · 计算机科学 2020-06-02 Song-Bo Yang , Tian-li Yu

Temporal action segmentation in videos has drawn much attention recently. Timestamp supervision is a cost-effective way for this task. To obtain more information to optimize the model, the existing method generated pseudo frame-wise labels…

计算机视觉与模式识别 · 计算机科学 2022-12-14 Yang Zhao , Yan Song

Scaling up weakly-supervised datasets has shown to be highly effective in the image-text domain and has contributed to most of the recent state-of-the-art computer vision and multimodal neural networks. However, existing large-scale…

计算机视觉与模式识别 · 计算机科学 2023-04-06 Vladislav Lialin , Stephen Rawls , David Chan , Shalini Ghosh , Anna Rumshisky , Wael Hamza

Conventional methods in semi-supervised learning (SSL) often face challenges related to limited data utilization, mainly due to their reliance on threshold-based techniques for selecting high-confidence unlabeled data during training.…

计算机视觉与模式识别 · 计算机科学 2024-05-13 Wenjin Zhang , Keyi Li , Sen Yang , Chenyang Gao , Wanzhao Yang , Sifan Yuan , Ivan Marsic

Although semi-supervised variational autoencoder (SemiVAE) works in image classification task, it fails in text classification task if using vanilla LSTM as its decoder. From a perspective of reinforcement learning, it is verified that the…

计算与语言 · 计算机科学 2016-11-28 Weidi Xu , Haoze Sun , Chao Deng , Ying Tan

The video action segmentation task is regularly explored under weaker forms of supervision, such as transcript supervision, where a list of actions is easier to obtain than dense frame-wise labels. In this formulation, the task presents…

计算机视觉与模式识别 · 计算机科学 2022-01-24 John Ridley , Huseyin Coskun , David Joseph Tan , Nassir Navab , Federico Tombari

Pixel space augmentation has grown in popularity in many Deep Learning areas, due to its effectiveness, simplicity, and low computational cost. Data augmentation for videos, however, still remains an under-explored research topic, as most…

计算机视觉与模式识别 · 计算机科学 2022-11-10 Artjoms Gorpincenko , Michal Mackiewicz

Masked video modeling~(MVM) has emerged as a highly effective pre-training strategy for visual foundation models, whereby the model reconstructs masked spatiotemporal tokens using information from visible tokens. However, a key challenge in…

计算机视觉与模式识别 · 计算机科学 2025-08-15 Ayush K. Rai , Kyle Min , Tarun Krishna , Feiyan Hu , Alan F. Smeaton , Noel E. O'Connor

Self-supervised learning presents a remarkable performance to utilize unlabeled data for various video tasks. In this paper, we focus on applying the power of self-supervised methods to improve semi-supervised action proposal generation.…

计算机视觉与模式识别 · 计算机科学 2021-04-08 Xiang Wang , Shiwei Zhang , Zhiwu Qing , Yuanjie Shao , Changxin Gao , Nong Sang

Face analysis has been studied from different angles to infer emotion, poses, shapes, and landmarks. Traditionally RGB cameras are used, yet for fine-grained tasks standard sensors might not be up to the task due to their latency, making it…

计算机视觉与模式识别 · 计算机科学 2024-10-30 Luca Cultrera , Federico Becattini , Lorenzo Berlincioni , Claudio Ferrari , Alberto Del Bimbo

Semantic segmentation using convolutional neural networks (CNN) is a crucial component in image analysis. Training a CNN to perform semantic segmentation requires a large amount of labeled data, where the production of such labeled data is…

计算机视觉与模式识别 · 计算机科学 2021-01-26 Ying Chen , Xu Ouyang , Kaiyue Zhu , Gady Agam

In this work, we focus on semi-supervised learning for video action detection. Video action detection requires spatiotemporal localization in addition to classification, and a limited amount of labels makes the model prone to unreliable…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Akash Kumar , Sirshapan Mitra , Yogesh Singh Rawat

Human action understanding is crucial for the advancement of multimodal systems. While recent developments, driven by powerful large language models (LLMs), aim to be general enough to cover a wide range of categories, they often overlook…

计算机视觉与模式识别 · 计算机科学 2025-01-03 Yongle Huang , Haodong Chen , Zhenbang Xu , Zihan Jia , Haozhou Sun , Dian Shao

Recent studies have shown that the benefits provided by self-supervised pre-training and self-training (pseudo-labeling) are complementary. Semi-supervised fine-tuning strategies under the pre-training framework, however, remain…

声音 · 计算机科学 2022-06-28 Bowen Zhang , Songjun Cao , Xiaoming Zhang , Yike Zhang , Long Ma , Takahiro Shinozaki

Deep convolutional networks have achieved great success for image recognition. However, for action recognition in videos, their advantage over traditional methods is not so evident. We present a general and flexible video-level framework…

计算机视觉与模式识别 · 计算机科学 2017-05-09 Limin Wang , Yuanjun Xiong , Zhe Wang , Yu Qiao , Dahua Lin , Xiaoou Tang , Luc Van Gool

Temporal action proposals are a common module in action detection pipelines today. Most current methods for training action proposal modules rely on fully supervised approaches that require large amounts of annotated temporal action…

计算机视觉与模式识别 · 计算机科学 2019-10-04 Jingwei Ji , Kaidi Cao , Juan Carlos Niebles

Current action recognition methods heavily rely on trimmed videos for model training. However, it is expensive and time-consuming to acquire a large-scale trimmed video dataset. This paper presents a new weakly supervised architecture,…

计算机视觉与模式识别 · 计算机科学 2017-05-23 Limin Wang , Yuanjun Xiong , Dahua Lin , Luc Van Gool

Semi-supervised learning suffers from the imbalance of labeled and unlabeled training data in the video surveillance scenario. In this paper, we propose a new semi-supervised learning method called SIAVC for industrial accident video…

计算机视觉与模式识别 · 计算机科学 2024-05-24 Zuoyong Li , Qinghua Lin , Haoyi Fan , Tiesong Zhao , David Zhang

We introduce S$^2$VS, a video similarity learning approach with self-supervision. Self-Supervised Learning (SSL) is typically used to train deep models on a proxy task so as to have strong transferability on target tasks after fine-tuning.…

计算机视觉与模式识别 · 计算机科学 2023-06-19 Giorgos Kordopatis-Zilos , Giorgos Tolias , Christos Tzelepis , Ioannis Kompatsiaris , Ioannis Patras , Symeon Papadopoulos

Semi-supervised action recognition is a challenging but important task due to the high cost of data annotation. A common approach to this problem is to assign unlabeled data with pseudo-labels, which are then used as additional supervision…

计算机视觉与模式识别 · 计算机科学 2022-04-19 Yinghao Xu , Fangyun Wei , Xiao Sun , Ceyuan Yang , Yujun Shen , Bo Dai , Bolei Zhou , Stephen Lin