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Anomaly detection in videos is a challenging task as anomalies in different videos are of different kinds. Therefore, a promising way to approach video anomaly detection is by learning the non-anomalous nature of the video at hand. To this…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Gargi V. Pillai , Ashish Verma , Debashis Sen

This paper focuses on self-supervised monocular depth estimation in dynamic scenes trained on monocular videos. Existing methods jointly estimate pixel-wise depth and motion, relying mainly on an image reconstruction loss. Dynamic regions1…

Computer Vision and Pattern Recognition · Computer Science 2024-04-24 Hoang Chuong Nguyen , Tianyu Wang , Jose M. Alvarez , Miaomiao Liu

The current methods of video-based 3D human pose estimation have achieved significant progress.However, they still face pressing challenges, such as the underutilization of spatiotemporal bodystructure features in transformers and the…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Yang Liu , Zhiyong Zhang

Multi-person 3D mesh recovery from videos is a critical first step towards automatic perception of group behavior in virtual reality, physical therapy and beyond. However, existing approaches rely on multi-stage paradigms, where the person…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Haoyuan Li , Haoye Dong , Hanchao Jia , Dong Huang , Michael C. Kampffmeyer , Liang Lin , Xiaodan Liang

Temporal action segmentation approaches have been very successful recently. However, annotating videos with frame-wise labels to train such models is very expensive and time consuming. While weakly supervised methods trained using only…

Computer Vision and Pattern Recognition · Computer Science 2021-03-29 Zhe Li , Yazan Abu Farha , Juergen Gall

Sequential user modeling, a critical task in personalized recommender systems, focuses on predicting the next item a user would prefer, requiring a deep understanding of user behavior sequences. Despite the remarkable success of…

Artificial Intelligence · Computer Science 2023-10-10 Hao Wang , Jianxun Lian , Mingqi Wu , Haoxuan Li , Jiajun Fan , Wanyue Xu , Chaozhuo Li , Xing Xie

Instance segmentation in videos, which aims to segment and track multiple objects in video frames, has garnered a flurry of research attention in recent years. In this paper, we present a novel weakly supervised framework with…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Liqi Yan , Qifan Wang , Siqi Ma , Jingang Wang , Changbin Yu

The potential for agents, whether embodied or software, to learn by observing other agents performing procedures involving objects and actions is rich. Current research on automatic procedure learning heavily relies on action labels or…

Computer Vision and Pattern Recognition · Computer Science 2017-11-23 Luowei Zhou , Chenliang Xu , Jason J. Corso

We introduce KeypointDeformer, a novel unsupervised method for shape control through automatically discovered 3D keypoints. We cast this as the problem of aligning a source 3D object to a target 3D object from the same object category. Our…

Computer Vision and Pattern Recognition · Computer Science 2021-04-23 Tomas Jakab , Richard Tucker , Ameesh Makadia , Jiajun Wu , Noah Snavely , Angjoo Kanazawa

Extracting informative representations from videos is fundamental for effectively learning various downstream tasks. We present a novel approach for unsupervised learning of meaningful representations from videos, leveraging the concept of…

Computer Vision and Pattern Recognition · Computer Science 2023-06-07 Ali Younes , Simone Schaub-Meyer , Georgia Chalvatzaki

Video processing has become a popular research direction in computer vision due to its various applications such as video summarization, action recognition, etc. Recently, deep learning-based methods have achieved impressive results in…

Computer Vision and Pattern Recognition · Computer Science 2020-09-29 G M Mashrur E Elahi , Yee-Hong Yang

We address the task of unsupervised retargeting of human actions from one video to another. We consider the challenging setting where only a few frames of the target is available. The core of our approach is a conditional generative model…

Computer Vision and Pattern Recognition · Computer Science 2020-03-26 Jessica Lee , Deva Ramanan , Rohit Girdhar

To realize human-robot collaboration, robots need to execute actions for new tasks according to human instructions given finite prior knowledge. Human experts can share their knowledge of how to perform a task with a robot through…

Computation and Language · Computer Science 2023-06-28 Chiori Hori , Puyuan Peng , David Harwath , Xinyu Liu , Kei Ota , Siddarth Jain , Radu Corcodel , Devesh Jha , Diego Romeres , Jonathan Le Roux

Recent advances in deep learning have achieved promising performance for medical image analysis, while in most cases ground-truth annotations from human experts are necessary to train the deep model. In practice, such annotations are…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Jianbo Jiao , Richard Droste , Lior Drukker , Aris T. Papageorghiou , J. Alison Noble

Identifying unusual driving behaviors exhibited by drivers during driving is essential for understanding driver behavior and the underlying causes of crashes. Previous studies have primarily approached this problem as a classification task,…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Armstrong Aboah , Ulas Bagci , Abdul Rashid Mussah , Neema Jakisa Owor , Yaw Adu-Gyamfi

Most person re-identification methods, being supervised techniques, suffer from the burden of massive annotation requirement. Unsupervised methods overcome this need for labeled data, but perform poorly compared to the supervised…

Computer Vision and Pattern Recognition · Computer Science 2023-04-06 Xueping Wang , Sujoy Paul , Dripta S. Raychaudhuri , Min Liu , Yaonan Wang , Amit K. Roy-Chowdhury

We propose a novel system for unsupervised skeleton-based action recognition. Given inputs of body keypoints sequences obtained during various movements, our system associates the sequences with actions. Our system is based on an…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Kun Su , Xiulong Liu , Eli Shlizerman

Transformer architectures have become the model of choice in natural language processing and are now being introduced into computer vision tasks such as image classification, object detection, and semantic segmentation. However, in the…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Ce Zheng , Sijie Zhu , Matias Mendieta , Taojiannan Yang , Chen Chen , Zhengming Ding

The goal of this work is spatio-temporal action localization in videos, using only the supervision from video-level class labels. The state-of-the-art casts this weakly-supervised action localization regime as a Multiple Instance Learning…

Computer Vision and Pattern Recognition · Computer Science 2018-11-26 Pascal Mettes , Cees G. M. Snoek

We address the challenging task of identifying, segmenting, and tracking hand-held objects, which is crucial for applications such as human action segmentation and performance evaluation. This task is particularly challenging due to heavy…

Computer Vision and Pattern Recognition · Computer Science 2024-04-23 Supreeth Narasimhaswamy , Huy Anh Nguyen , Lihan Huang , Minh Hoai