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Semi-Supervised Learning (SSL) is a framework that utilizes both labeled and unlabeled data to enhance model performance. Conventional SSL methods operate under the assumption that labeled and unlabeled data share the same label space.…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Noam Fluss , Guy Hacohen , Daphna Weinshall

Although unsupervised person re-identification (RE-ID) has drawn increasing research attentions due to its potential to address the scalability problem of supervised RE-ID models, it is very challenging to learn discriminative information…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Hong-Xing Yu , Wei-Shi Zheng , Ancong Wu , Xiaowei Guo , Shaogang Gong , Jian-Huang Lai

The existing person search methods use the annotated labels of person identities to train deep networks in a supervised manner that requires a huge amount of time and effort for human labeling. In this paper, we first introduce a novel…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Byeong-Ju Han , Kuhyeun Ko , Jae-Young Sim

Deep learning has proven to be a very effective approach for Hyperspectral Image (HSI) classification. However, deep neural networks require large annotated datasets to generalize well. This limits the applicability of deep learning for HSI…

Computer Vision and Pattern Recognition · Computer Science 2022-06-27 Nassim Ait Ali Braham , Lichao Mou , Jocelyn Chanussot , Julien Mairal , Xiao Xiang Zhu

Joint-embedding self-supervised learning (SSL), the key paradigm for unsupervised representation learning from visual data, learns from invariances between semantically-related data pairs. We study the one-to-many mapping problem in SSL,…

Machine Learning · Computer Science 2026-02-03 Yipeng Zhang , Hafez Ghaemi , Jungyoon Lee , Shahab Bakhtiari , Eilif B. Muller , Laurent Charlin

Semi-supervised learning (SSL) has been extensively studied to improve the generalization ability of deep neural networks for visual recognition. To involve the unlabelled data, most existing SSL methods are based on common density-based…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Suichan Li , Bin Liu , Dongdong Chen , Qi Chu , Lu Yuan , Nenghai Yu

Existing person re-identification (re-id) methods mostly rely on supervised model learning from a large set of person identity labelled training data per domain. This limits their scalability and usability in large scale deployments. In…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Minxian Li , Xiatian Zhu , Shaogang Gong

In this paper, we aim to tackle the one-shot person re-identification problem where only one image is labelled for each person, while other images are unlabelled. This task is challenging due to the lack of sufficient labelled training…

Computer Vision and Pattern Recognition · Computer Science 2022-01-21 Hui Li , Jimin Xiao , Mingjie Sun , Eng Gee Lim , Yao Zhao

Current 3D semi-supervised segmentation methods face significant challenges such as limited consideration of contextual information and the inability to generate reliable pseudo-labels for effective unsupervised data use. To address these…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Sanaz Karimijafarbigloo , Reza Azad , Yury Velichko , Ulas Bagci , Dorit Merhof

Self-supervised learning algorithms (SSL) based on instance discrimination have shown promising results, performing competitively or even outperforming supervised learning counterparts in some downstream tasks. Such approaches employ data…

Computer Vision and Pattern Recognition · Computer Science 2025-05-01 Mohammad Alkhalefi , Georgios Leontidis , Mingjun Zhong

Supervised-learning based person re-identification (re-id) require a large amount of manual labeled data, which is not applicable in practical re-id deployment. In this work, we propose a Support Pair Active Learning (SPAL) framework to…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Dapeng Jin , Minxian Li

Scale variation across object instances remains a key challenge in object detection task. Despite the remarkable progress made by modern detection models, this challenge is particularly evident in the semi-supervised case. While existing…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Liang Liu , Boshen Zhang , Jiangning Zhang , Wuhao Zhang , Zhenye Gan , Guanzhong Tian , Wenbing Zhu , Yabiao Wang , Chengjie Wang

Image-level weak-to-strong consistency serves as the predominant paradigm in semi-supervised learning~(SSL) due to its simplicity and impressive performance. Nonetheless, this approach confines all perturbations to the image level and…

Computer Vision and Pattern Recognition · Computer Science 2024-08-26 Zhiyu Wu , Jinshi Cui

Although unsupervised person re-identification (Re-ID) has drawn increasing research attention recently, it remains challenging to learn discriminative features without annotations across disjoint camera views. In this paper, we address the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-09 Qing Li , Xiaojiang Peng , Yu Qiao , Qi Hao

Writer independent offline signature verification is one of the most challenging tasks in pattern recognition as there is often a scarcity of training data. To handle such data scarcity problem, in this paper, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Siladittya Manna , Soumitri Chattopadhyay , Saumik Bhattacharya , Umapada Pal

Humans are capable of learning new concepts from only a few (labeled) exemplars, incrementally and continually. This happens within the context that we can differentiate among the exemplars, and between the exemplars and large amounts of…

Machine Learning · Computer Science 2022-02-08 Daniel T. Chang

Large scale recommender models find most relevant items from huge catalogs, and they play a critical role in modern search and recommendation systems. To model the input space with large-vocab categorical features, a typical recommender…

Self-supervised learning (SSL) has recently achieved promising performance for 3D medical image analysis tasks. Most current methods follow existing SSL paradigm originally designed for photographic or natural images, which cannot…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Yankai Jiang , Mingze Sun , Heng Guo , Xiaoyu Bai , Ke Yan , Le Lu , Minfeng Xu

Semi-weakly supervised semantic segmentation (SWSSS) aims to train a model to identify objects in images based on a small number of images with pixel-level labels, and many more images with only image-level labels. Most existing SWSSS…

Computer Vision and Pattern Recognition · Computer Science 2022-05-04 Wonho Bae , Junhyug Noh , Milad Jalali Asadabadi , Danica J. Sutherland

While the widely available embedded sensors in smartphones and other wearable devices make it easier to obtain data of human activities, recognizing different types of human activities from sensor-based data remains a difficult research…

Signal Processing · Electrical Eng. & Systems 2024-08-15 Taoran Sheng , Manfred Huber