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Aligning physiological parameter labels with large-scale photoplethysmographic (PPG) data for deep learning is challenging and resource-intensive. While self-supervised representation learning (SSRL) can handle limited annotated data, the…

Signal Processing · Electrical Eng. & Systems 2026-04-28 Zexing Zhang , Huimin Lu , Songzhe Ma , Jianzhong Peng , Chenglin Lin , Niya Li , Bingwang Dong

Progress in remote PhotoPlethysmoGraphy (rPPG) is limited by the critical issues of existing publicly available datasets: small size, privacy concerns with facial videos, and lack of diversity in conditions. The paper introduces a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Konstantin Egorov , Stepan Botman , Pavel Blinov , Galina Zubkova , Anton Ivaschenko , Alexander Kolsanov , Andrey Savchenko

Heart rate is a physiological signal that provides information about an individual's health and affective state. Remote photoplethysmography (rPPG) allows the estimation of this signal from video recordings of a person's face. Classical…

Machine Learning · Computer Science 2025-03-18 Bhargav Acharya , William Saakyan , Barbara Hammer , Hanna Drimalla

Recent advances in unsupervised learning have demonstrated the ability of large vision models to achieve promising results on downstream tasks by pre-training on large amount of unlabelled data. Such pre-training techniques have also been…

Computer Vision and Pattern Recognition · Computer Science 2024-03-11 Mubashir Noman , Muzammal Naseer , Hisham Cholakkal , Rao Muhammad Anwar , Salman Khan , Fahad Shahbaz Khan

In defense-related remote sensing applications, such as vehicle detection on satellite imagery, supervised learning requires a huge number of labeled examples to reach operational performances. Such data are challenging to obtain as it…

Computer Vision and Pattern Recognition · Computer Science 2024-10-08 Jules BOURCIER , Thomas Floquet , Gohar Dashyan , Tugdual Ceillier , Karteek Alahari , Jocelyn Chanussot

Hyperspectral image (HSI) classification is one of the most active research topics and has achieved promising results boosted by the recent development of deep learning. However, most state-of-the-art approaches tend to perform poorly when…

Computer Vision and Pattern Recognition · Computer Science 2021-12-08 Ying Qu , Razieh Kaviani Baghbaderani , Wei Li , Lianru Gao , Hairong Qi

Analyzing electroencephalographic (EEG) time series can be challenging, especially with deep neural networks, due to the large variability among human subjects and often small datasets. To address these challenges, various strategies, such…

Machine Learning · Computer Science 2025-09-18 Niklas Grieger , Siamak Mehrkanoon , Stephan Bialonski

Self-supervised pretraining attempts to enhance model performance by obtaining effective features from unlabeled data, and has demonstrated its effectiveness in the field of histopathology images. Despite its success, few works concentrate…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Zhiyun Song , Penghui Du , Junpeng Yan , Kailu Li , Jianzhong Shou , Maode Lai , Yubo Fan , Yan Xu

In the past five years we have observed the rise of incredibly well performing feed-forward neural networks trained supervisedly for vision related tasks. These models have achieved super-human performance on object recognition,…

Computer Vision and Pattern Recognition · Computer Science 2017-06-15 Alfredo Canziani , Eugenio Culurciello

Person re-identification aims to match a person's identity across multiple camera streams. Deep neural networks have been successfully applied to the challenging person re-identification task. One remarkable bottleneck is that the existing…

Computer Vision and Pattern Recognition · Computer Science 2018-05-17 Guodong Ding , Shanshan Zhang , Salman Khan , Zhenmin Tang , Jian Zhang , Fatih Porikli

Following AI scaling trends, frontier models continue to grow in size and continue to be trained on larger datasets. Training these models requires huge investments in exascale computational resources, which has in turn driven developtment…

Machine Learning · Computer Science 2025-09-18 Hiroki Naganuma , Xinzhi Zhang , Man-Chung Yue , Ioannis Mitliagkas , Philipp A. Witte , Russell J. Hewett , Yin Tat Lee

Transform and entropy models are the two core components in deep image compression neural networks. Most existing learning-based image compression methods utilize convolutional-based transform, which lacks the ability to model long-range…

Image and Video Processing · Electrical Eng. & Systems 2023-09-20 Atefeh Khoshkhahtinat , Ali Zafari , Piyush M. Mehta , Mohammad Akyash , Hossein Kashiani , Nasser M. Nasrabadi

Semi-supervised learning (SSL) uses unlabeled data during training to learn better models. Previous studies on SSL for medical image segmentation focused mostly on improving model generalization to unseen data. In some applications,…

In this paper, we present a large scale unlabeled person re-identification (Re-ID) dataset "LUPerson" and make the first attempt of performing unsupervised pre-training for improving the generalization ability of the learned person Re-ID…

Computer Vision and Pattern Recognition · Computer Science 2021-04-27 Dengpan Fu , Dongdong Chen , Jianmin Bao , Hao Yang , Lu Yuan , Lei Zhang , Houqiang Li , Dong Chen

Recently, graph-based semi-supervised learning and pseudo-labeling have gained attention due to their effectiveness in reducing the need for extensive data annotations. Pseudo-labeling uses predictions from unlabeled data to improve model…

Computer Vision and Pattern Recognition · Computer Science 2025-10-30 Jingjun Bi , Fadi Dornaika

While supervised techniques in re-identification are extremely effective, the need for large amounts of annotations makes them impractical for large camera networks. One-shot re-identification, which uses a singular labeled tracklet for…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Dripta S. Raychaudhuri , Amit K. Roy-Chowdhury

Weakly supervised temporal action localization is a challenging task as only the video-level annotation is available during the training process. To address this problem, we propose a two-stage approach to fully exploit multi-resolution…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Rui Su , Dong Xu , Luping Zhou , Wanli Ouyang

This paper introduces a novel approach to Social Group Activity Recognition (SoGAR) using Self-supervised Transformers network that can effectively utilize unlabeled video data. To extract spatio-temporal information, we created local and…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Naga VS Raviteja Chappa , Pha Nguyen , Alexander H Nelson , Han-Seok Seo , Xin Li , Page Daniel Dobbs , Khoa Luu

Pre-training models on vast quantities of unlabeled data has emerged as an effective approach to improving accuracy on many NLP tasks. On the other hand, traditional machine translation has a long history of leveraging unlabeled data…

Computation and Language · Computer Science 2020-11-17 Shruti Bhosale , Kyra Yee , Sergey Edunov , Michael Auli

In recent years, there has been a rapid development of spatio-temporal prediction techniques in response to the increasing demands of traffic management and travel planning. While advanced end-to-end models have achieved notable success in…

Machine Learning · Computer Science 2023-11-09 Zhonghang Li , Lianghao Xia , Yong Xu , Chao Huang