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This work tackles Weakly Supervised Anomaly detection, in which a predictor is allowed to learn not only from normal examples but also from a few labeled anomalies made available during training. In particular, we deal with the localization…

计算机视觉与模式识别 · 计算机科学 2022-08-11 Aniello Panariello , Angelo Porrello , Simone Calderara , Rita Cucchiara

Supervised learning in large discriminative models is a mainstay for modern computer vision. Such an approach necessitates investing in large-scale human-annotated datasets for achieving state-of-the-art results. In turn, the efficacy of…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Liang-Chieh Chen , Raphael Gontijo Lopes , Bowen Cheng , Maxwell D. Collins , Ekin D. Cubuk , Barret Zoph , Hartwig Adam , Jonathon Shlens

This paper provides a review on representation learning for videos. We classify recent spatiotemporal feature learning methods for sequential visual data and compare their pros and cons for general video analysis. Building effective…

计算机视觉与模式识别 · 计算机科学 2024-05-13 Elham Ravanbakhsh , Yongqing Liang , J. Ramanujam , Xin Li

We introduce a novel self-supervised learning approach to learn representations of videos that are responsive to changes in the motion dynamics. Our representations can be learned from data without human annotation and provide a substantial…

计算机视觉与模式识别 · 计算机科学 2020-07-22 Simon Jenni , Givi Meishvili , Paolo Favaro

The remarkable success of deep learning in various domains relies on the availability of large-scale annotated datasets. However, obtaining annotations is expensive and requires great effort, which is especially challenging for videos.…

计算机视觉与模式识别 · 计算机科学 2023-07-20 Madeline C. Schiappa , Yogesh S. Rawat , Mubarak Shah

The supervised learning paradigm is limited by the cost - and sometimes the impracticality - of data collection and labeling in multiple domains. Self-supervised learning, a paradigm which exploits the structure of unlabeled data to create…

Self-supervised video representation learning aimed at maximizing similarity between different temporal segments of one video, in order to enforce feature persistence over time. This leads to loss of pertinent information related to…

计算机视觉与模式识别 · 计算机科学 2023-05-12 Di Yang , Yaohui Wang , Quan Kong , Antitza Dantcheva , Lorenzo Garattoni , Gianpiero Francesca , Francois Bremond

Recent advances in supervised deep learning methods are enabling remote measurements of photoplethysmography-based physiological signals using facial videos. The performance of these supervised methods, however, are dependent on the…

计算机视觉与模式识别 · 计算机科学 2021-12-15 Hao Wang , Euijoon Ahn , Jinman Kim

Modern self-supervised learning algorithms typically enforce persistency of instance representations across views. While being very effective on learning holistic image and video representations, such an objective becomes sub-optimal for…

计算机视觉与模式识别 · 计算机科学 2022-04-05 Liangzhe Yuan , Rui Qian , Yin Cui , Boqing Gong , Florian Schroff , Ming-Hsuan Yang , Hartwig Adam , Ting Liu

This paper studies the joint learning of action recognition and temporal localization in long, untrimmed videos. We employ a multi-task learning framework that performs the three highly related steps of action proposal, action recognition,…

计算机视觉与模式识别 · 计算机科学 2017-04-05 Yi Zhu , Shawn Newsam

Video self-supervised learning is a challenging task, which requires significant expressive power from the model to leverage rich spatial-temporal knowledge and generate effective supervisory signals from large amounts of unlabeled videos.…

计算机视觉与模式识别 · 计算机科学 2023-07-19 Yang Liu , Keze Wang , Lingbo Liu , Haoyuan Lan , Liang Lin

The recently advanced unsupervised learning approaches use the siamese-like framework to compare two "views" from the same image for learning representations. Making the two views distinctive is a core to guarantee that unsupervised methods…

计算机视觉与模式识别 · 计算机科学 2022-02-18 Zhiqiang Shen , Zechun Liu , Zhuang Liu , Marios Savvides , Trevor Darrell , Eric Xing

In recent years, advances in Artificial Intelligence have significantly impacted computer science, particularly in the field of computer vision, enabling solutions to complex problems such as video frame prediction. Video frame prediction…

计算机视觉与模式识别 · 计算机科学 2025-08-05 Jose M. Sánchez Velázquez , Mingbo Cai , Andrew Coney , Álvaro J. García- Tejedor , Alberto Nogales

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…

计算机视觉与模式识别 · 计算机科学 2020-03-03 Jianbo Jiao , Richard Droste , Lior Drukker , Aris T. Papageorghiou , J. Alison Noble

Temporal action segmentation is a task to classify each frame in the video with an action label. However, it is quite expensive to annotate every frame in a large corpus of videos to construct a comprehensive supervised training dataset.…

计算机视觉与模式识别 · 计算机科学 2021-10-26 Zhe Wang , Hao Chen , Xinyu Li , Chunhui Liu , Yuanjun Xiong , Joseph Tighe , Charless Fowlkes

Despite rapid advances in face recognition, there remains a clear gap between the performance of still image-based face recognition and video-based face recognition, due to the vast difference in visual quality between the domains and the…

计算机视觉与模式识别 · 计算机科学 2017-08-15 Kihyuk Sohn , Sifei Liu , Guangyu Zhong , Xiang Yu , Ming-Hsuan Yang , Manmohan Chandraker

Recent years have seen considerable research activities devoted to video enhancement that simultaneously increases temporal frame rate and spatial resolution. However, the existing methods either fail to explore the intrinsic relationship…

计算机视觉与模式识别 · 计算机科学 2021-09-02 Zhihao Shi , Xiaohong Liu , Chengqi Li , Linhui Dai , Jun Chen , Timothy N. Davidson , Jiying Zhao

In this paper we address the problem of automatically discovering atomic actions in unsupervised manner from instructional videos, which are rarely annotated with atomic actions. We present an unsupervised approach to learn atomic actions…

计算机视觉与模式识别 · 计算机科学 2021-06-08 AJ Piergiovanni , Anelia Angelova , Michael S. Ryoo , Irfan Essa

Video semantic segmentation has achieved great progress under the supervision of large amounts of labelled training data. However, domain adaptive video segmentation, which can mitigate data labelling constraints by adapting from a labelled…

计算机视觉与模式识别 · 计算机科学 2022-07-07 Yun Xing , Dayan Guan , Jiaxing Huang , Shijian Lu

This paper proposes to learn reliable dense correspondence from videos in a self-supervised manner. Our learning process integrates two highly related tasks: tracking large image regions \emph{and} establishing fine-grained pixel-level…

计算机视觉与模式识别 · 计算机科学 2019-09-27 Xueting Li , Sifei Liu , Shalini De Mello , Xiaolong Wang , Jan Kautz , Ming-Hsuan Yang