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The success of deep convolutional neural networks (DCNNs) benefits from high volumes of annotated data. However, annotating medical images is laborious, expensive, and requires human expertise, which induces the label scarcity problem.…

Image and Video Processing · Electrical Eng. & Systems 2022-03-24 Ziyuan Zhao , Kaixin Xu , Shumeng Li , Zeng Zeng , Cuntai Guan

To address semi-supervised learning from both labeled and unlabeled data, we present a novel meta-learning scheme. We particularly consider that labeled and unlabeled data share disjoint ground truth label sets, which can be seen tasks like…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Yun-Chun Chen , Chao-Te Chou , Yu-Chiang Frank Wang

Human identification is a key requirement for many applications in everyday life, such as personalized services, automatic surveillance, continuous authentication, and contact tracing during pandemics, etc. This work studies the problem of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Dongjiang Cao , Ruofeng Liu , Hao Li , Shuai Wang , Wenchao Jiang , Chris Xiaoxuan Lu

Unsupervised person re-identification is a challenging and promising task in computer vision. Nowadays unsupervised person re-identification methods have achieved great progress by training with pseudo labels. However, how to purify feature…

Computer Vision and Pattern Recognition · Computer Science 2023-06-28 Long Lan , Xiao Teng , Jing Zhang , Xiang Zhang , Dacheng Tao

Unsupervised domain adaptation in person re-identification resorts to labeled source data to promote the model training on target domain, facing the dilemmas caused by large domain shift and large camera variations. The non-overlapping…

Computer Vision and Pattern Recognition · Computer Science 2019-05-15 Chuan-Xian Ren , Bo-Hua Liang , Zhen Lei

4D human perception plays an essential role in a myriad of applications, such as home automation and metaverse avatar simulation. However, existing solutions which mainly rely on cameras and wearable devices are either privacy intrusive or…

Signal Processing · Electrical Eng. & Systems 2023-09-26 Jianfei Yang , He Huang , Yunjiao Zhou , Xinyan Chen , Yuecong Xu , Shenghai Yuan , Han Zou , Chris Xiaoxuan Lu , Lihua Xie

Existing person re-identification (re-ID) research mainly focuses on pedestrian identity matching across cameras in adjacent areas. However, in reality, it is inevitable to face the problem of pedestrian identity matching across…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Huafeng Li , Yanmei Mao , Yafei Zhang , Guanqiu Qi , Zhengtao Yu

Multi-grained features extracted from convolutional neural networks (CNNs) have demonstrated their strong discrimination ability in supervised person re-identification (Re-ID) tasks. Inspired by them, this work investigates the way of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Jiachen Li , Menglin Wang , Xiaojin Gong

Multispectral pedestrian detection has shown great advantages under poor illumination conditions, since the thermal modality provides complementary information for the color image. However, real multispectral data suffers from the position…

Computer Vision and Pattern Recognition · Computer Science 2019-10-21 Lu Zhang , Xiangyu Zhu , Xiangyu Chen , Xu Yang , Zhen Lei , Zhiyong Liu

Machine learning techniques have shown remarkable accuracy in localization tasks, but their dependency on vast amounts of labeled data, particularly Channel State Information (CSI) and corresponding coordinates, remains a bottleneck.…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Ankan Dash , Jingyi Gu , Guiling Wang , Nirwan Ansari

Person re-identification in large-scale multi-camera networks is a challenging task because of the spatio-temporal uncertainty and high complexity due to large numbers of cameras and people. To handle these difficulties, additional…

Computer Vision and Pattern Recognition · Computer Science 2017-10-03 Yeong-Jun Cho , Jae-Han Park , Su-A Kim , Kyuewang Lee , Kuk-Jin Yoon

Most unsupervised domain adaptation (UDA) methods assume that labeled source images are available during model adaptation. However, this assumption is often infeasible owing to confidentiality issues or memory constraints on mobile devices.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 JoonHo Lee , Gyemin Lee

Visible-Infrared Person Re-Identification (VI-ReID) is a challenging task due to the large modality discrepancy between visible and infrared images, which complicates the alignment of their features into a suitable common space. Moreover,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-02 Neng Dong , Shuanglin Yan , Liyan Zhang , Jinhui Tang

Unsupervised visible-infrared person re-identification (USL-VI-ReID) aims to match pedestrian images of the same identity from different modalities without annotations. Existing works mainly focus on alleviating the modality gap by aligning…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 De Cheng , Lingfeng He , Nannan Wang , Shizhou Zhang , Zhen Wang , Xinbo Gao

Person re-identification (Re-ID) has become increasingly important as it supports a wide range of security applications. Traditional person Re-ID mainly relies on optical camera-based systems, which incur several limitations due to the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Yili Ren , Jie Yang

Unsupervised visible-infrared person re-identification (USL-VI-ReID) endeavors to retrieve pedestrian images of the same identity from different modalities without annotations. While prior work focuses on establishing cross-modality…

Computer Vision and Pattern Recognition · Computer Science 2024-12-09 Lingfeng He , De Cheng , Nannan Wang , Xinbo Gao

Over the past years, the main research innovations in face recognition focused on training deep neural networks on large-scale identity-labeled datasets using variations of multi-class classification losses. However, many of these datasets…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Fadi Boutros , Marcel Klemt , Meiling Fang , Arjan Kuijper , Naser Damer

Existing person re-identification models often have low generalizability, which is mostly due to limited availability of large-scale labeled data in training. However, labeling large-scale training data is very expensive and time-consuming,…

Computer Vision and Pattern Recognition · Computer Science 2021-10-25 Wenhao Wang , Shengcai Liao , Fang Zhao , Cuicui Kang , Ling Shao

In this paper we propose a novel learning framework called Supervised and Weakly Supervised Learning where the goal is to learn simultaneously from weakly and strongly labeled data. Strongly labeled data can be simply understood as fully…

Machine Learning · Computer Science 2017-02-21 Anurag Kumar , Bhiksha Raj

WiFi-based mobility monitoring in urban environments can provide valuable insights into pedestrian and vehicle movements. However, MAC address randomization introduces a significant obstacle in accurately estimating congestion levels and…

Signal Processing · Electrical Eng. & Systems 2025-03-05 Stepan Mazokha , Fanchen Bao , George Sklivanitis , Jason O. Hallstrom