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Its numerous applications make multi-human 3D pose estimation a remarkably impactful area of research. Nevertheless, assuming a multiple-view system composed of several regular RGB cameras, 3D multi-pose estimation presents several…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Daniel Rodriguez-Criado , Pilar Bachiller , George Vogiatzis , Luis J. Manso

Person re-identification (re-ID) is an important topic in computer vision. This paper studies the unsupervised setting of re-ID, which does not require any labeled information and thus is freely deployed to new scenarios. There are very few…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Yutian Lin , Lingxi Xie , Yu Wu , Chenggang Yan , Qi Tian

We address the problem of learning self-supervised representations from unlabeled image collections. Unlike existing approaches that attempt to learn useful features by maximizing similarity between augmented versions of each input image or…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Omiros Pantazis , Gabriel Brostow , Kate Jones , Oisin Mac Aodha

We introduce a novel framework to track multiple objects in overhead camera videos for airport checkpoint security scenarios where targets correspond to passengers and their baggage items. We propose a Self-Supervised Learning (SSL)…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Abubakar Siddique , Henry Medeiros

We present a self-supervised human mesh recovery framework to infer human pose and shape from monocular images in the absence of any paired supervision. Recent advances have shifted the interest towards directly regressing parameters of a…

Computer Vision and Pattern Recognition · Computer Science 2020-08-05 Jogendra Nath Kundu , Mugalodi Rakesh , Varun Jampani , Rahul Mysore Venkatesh , R. Venkatesh Babu

In this paper, we introduce MVSparse, a novel and efficient framework for cooperative multi-person tracking across multiple synchronized cameras. The MVSparse system is comprised of a carefully orchestrated pipeline, combining edge…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Keivan Nalaie , Rong Zheng

Human actions in videos are 3D signals. However, there are a few methods available for multiple human action recognition. For long videos, it's difficult to search within a video for a specific action and/or person. For that, this paper…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Noor Almaadeed , Omar Elharrouss , Somaya Al-Maadeed , Ahmed Bouridane , Azeddine Beghdadi

Existing person re-identification (re-id) methods are stuck when deployed to a new unseen scenario despite the success in cross-camera person matching. Recent efforts have been substantially devoted to domain adaptive person re-id where…

Computer Vision and Pattern Recognition · Computer Science 2021-09-10 Lingxiao He , Wu Liu , Jian Liang , Kecheng Zheng , Xingyu Liao , Peng Cheng , Tao Mei

Several unsupervised and self-supervised approaches have been developed in recent years to learn visual features from large-scale unlabeled datasets. Their main drawback however is that these methods are hardly able to recognize visual…

Computer Vision and Pattern Recognition · Computer Science 2022-06-08 Alessandra Alfani , Federico Becattini , Lorenzo Seidenari , Alberto Del Bimbo

Pedestrian detection models in autonomous driving systems often lack robustness due to insufficient representation of dangerous pedestrian scenarios in training datasets. To address this limitation, we present a novel framework for…

Computer Vision and Pattern Recognition · Computer Science 2025-08-04 Danzhen Fu , Jiagao Hu , Daiguo Zhou , Fei Wang , Zepeng Wang , Wenhua Liao

Self-supervised video correspondence learning depends on the ability to accurately associate pixels between video frames that correspond to the same visual object. However, achieving reliable pixel matching without supervision remains a…

Computer Vision and Pattern Recognition · Computer Science 2025-05-01 Zihan Zhou , Changrui Dai , Aibo Song , Xiaolin Fang

Body-worn cameras are now commonly used for logging daily life, sports, and law enforcement activities, creating a large volume of archived footage. This paper studies the problem of classifying frames of footage according to the activity…

Image and Video Processing · Electrical Eng. & Systems 2019-04-22 Honglin Chen , Hao Li , Alexander Song , Matt Haberland , Osman Akar , Adam Dhillon , Tiankuang Zhou , Andrea L. Bertozzi , P. Jeffrey Brantingham

Multiple Object Tracking (MOT) is a long-standing task in computer vision. Current approaches based on the tracking by detection paradigm either require some sort of domain knowledge or supervision to associate data correctly into tracks.…

Computer Vision and Pattern Recognition · Computer Science 2020-02-05 Kalun Ho , Janis Keuper , Margret Keuper

We introduce a novel framework to track multiple objects in overhead camera videos for airport checkpoint security scenarios where targets correspond to passengers and their baggage items. We propose a self-supervised learning (SSL)…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Abubakar Siddique , Henry Medeiros

Objective monitoring and assessment of human motor behavior can improve the diagnosis and management of several medical conditions. Over the past decade, significant advances have been made in the use of wearable technology for continuously…

Computer Vision and Pattern Recognition · Computer Science 2019-09-23 Behnaz Rezaei , Yiorgos Christakis , Bryan Ho , Kevin Thomas , Kelley Erb , Sarah Ostadabbas , Shyamal Patel

Distinguishing visually similar objects by their motion remains a critical challenge in computer vision. Although supervised trackers show promise, contemporary self-supervised trackers struggle when visual cues become ambiguous, limiting…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Chenshuang Zhang , Kang Zhang , Joon Son Chung , In So Kweon , Junmo Kim , Chengzhi Mao

Human group detection, which splits crowd of people into groups, is an important step for video-based human social activity analysis. The core of human group detection is the human social relation representation and division.In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Jiacheng Li , Ruize Han , Haomin Yan , Zekun Qian , Wei Feng , Song Wang

Most of the proposed person re-identification algorithms conduct supervised training and testing on single labeled datasets with small size, so directly deploying these trained models to a large-scale real-world camera network may lead to…

Computer Vision and Pattern Recognition · Computer Science 2018-03-21 Jianming Lv , Weihang Chen , Qing Li , Can Yang

Learning visual features from unlabeled images has proven successful for semantic categorization, often by mapping different $views$ of the same object to the same feature to achieve recognition invariance. However, visual recognition…

Computer Vision and Pattern Recognition · Computer Science 2024-08-08 Jiayun Wang , Yubei Chen , Stella X. Yu

We propose an unsupervised method for detecting and tracking moving objects in 3D, in unlabelled RGB-D videos. The method begins with classic handcrafted techniques for segmenting objects using motion cues: we estimate optical flow and…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Adam W. Harley , Yiming Zuo , Jing Wen , Ayush Mangal , Shubhankar Potdar , Ritwick Chaudhry , Katerina Fragkiadaki