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In this paper, we tackle the problem of temporally consistent boundary detection and hierarchical segmentation in videos. While finding the best high-level reasoning of region assignments in videos is the focus of much recent research,…

Computer Vision and Pattern Recognition · Computer Science 2016-06-09 Margret Keuper , Thomas Brox

Most self-supervised video representation learning approaches focus on action recognition. In contrast, in this paper we focus on self-supervised video learning for movie understanding and propose a novel hierarchical self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2022-04-08 Fanyi Xiao , Kaustav Kundu , Joseph Tighe , Davide Modolo

This paper targets unsupervised skeleton-based action representation learning and proposes a new Hierarchical Contrast (HiCo) framework. Different from the existing contrastive-based solutions that typically represent an input skeleton…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Jianfeng Dong , Shengkai Sun , Zhonglin Liu , Shujie Chen , Baolong Liu , Xun Wang

The objective of this paper is visual-only self-supervised video representation learning. We make the following contributions: (i) we investigate the benefit of adding semantic-class positives to instance-based Info Noise Contrastive…

Computer Vision and Pattern Recognition · Computer Science 2021-01-13 Tengda Han , Weidi Xie , Andrew Zisserman

This paper presents Probabilistic Video Contrastive Learning, a self-supervised representation learning method that bridges contrastive learning with probabilistic representation. We hypothesize that the clips composing the video have…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Jungin Park , Jiyoung Lee , Ig-Jae Kim , Kwanghoon Sohn

Human activities are particularly complex and variable, and this makes challenging for deep learning models to reason about them. However, we note that such variability does have an underlying structure, composed of a hierarchy of patterns…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Simone Alberto Peirone , Francesca Pistilli , Giuseppe Averta

Self-supervised learning (SSL) has emerged as a powerful technique for learning visual representations. While recent SSL approaches achieve strong results in global image understanding, they are limited in capturing the structured…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Oussama Hadjerci , Antoine Letienne , Mohamed Abbas Hedjazi , Adel Hafiane

In this paper, we investigate the problem of unpaired video-to-video translation. Given a video in the source domain, we aim to learn the conditional distribution of the corresponding video in the target domain, without seeing any pairs of…

Computer Vision and Pattern Recognition · Computer Science 2019-08-22 Kwanyong Park , Sanghyun Woo , Dahun Kim , Donghyeon Cho , In So Kweon

Generated video scenes for action-centric sequence descriptions, such as recipe instructions and do-it-yourself projects, often include non-linear patterns, where the next video may need to be visually consistent not with the immediately…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Vasco Ramos , Yonatan Bitton , Michal Yarom , Idan Szpektor , Joao Magalhaes

Video recognition models have progressed significantly over the past few years, evolving from shallow classifiers trained on hand-crafted features to deep spatiotemporal networks. However, labeled video data required to train such models…

Computer Vision and Pattern Recognition · Computer Science 2019-08-21 Rohit Girdhar , Du Tran , Lorenzo Torresani , Deva Ramanan

This paper demonstrates a self-supervised framework for learning voxel-wise coarse-to-fine representations tailored for dense downstream tasks. Our approach stems from the observation that existing methods for hierarchical representation…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Eytan Kats , Jochen G. Hirsch , Mattias P. Heinrich

Video-and-Language Inference is a recently proposed task for joint video-and-language understanding. This new task requires a model to draw inference on whether a natural language statement entails or contradicts a given video clip. In this…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Juncheng Li , Siliang Tang , Linchao Zhu , Haochen Shi , Xuanwen Huang , Fei Wu , Yi Yang , Yueting Zhuang

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

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…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Elham Ravanbakhsh , Yongqing Liang , J. Ramanujam , Xin Li

This paper presents a self-supervised method for learning reliable visual correspondence from unlabeled videos. We formulate the correspondence as finding paths in a joint space-time graph, where nodes are grid patches sampled from frames,…

Computer Vision and Pattern Recognition · Computer Science 2021-09-29 Zixu Zhao , Yueming Jin , Pheng-Ann Heng

We introduce a non-parametric approach for infinite video texture synthesis using a representation learned via contrastive learning. We take inspiration from Video Textures, which showed that plausible new videos could be generated from a…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Medhini Narasimhan , Shiry Ginosar , Andrew Owens , Alexei A. Efros , Trevor Darrell

Recent advances in contrastive learning have enlightened diverse applications across various semi-supervised fields. Jointly training supervised learning and unsupervised learning with a shared feature encoder becomes a common scheme.…

Machine Learning · Computer Science 2022-06-03 Cheng Tan , Zhangyang Gao , Lirong Wu , Siyuan Li , Stan Z. Li

Video object segmentation is challenging due to the factors like rapidly fast motion, cluttered backgrounds, arbitrary object appearance variation and shape deformation. Most existing methods only explore appearance information between two…

Computer Vision and Pattern Recognition · Computer Science 2016-12-28 Kaihua Zhang , Xuejun Li , Qingshan Liu

Self-supervised learning holds promise in leveraging large numbers of unlabeled data. However, its success heavily relies on the highly-curated dataset, e.g., ImageNet, which still needs human cleaning. Directly learning representations…

Computer Vision and Pattern Recognition · Computer Science 2023-02-24 Meilin Chen , Yizhou Wang , Shixiang Tang , Feng Zhu , Haiyang Yang , Lei Bai , Rui Zhao , Donglian Qi , Wanli Ouyang

Although self-/un-supervised methods have led to rapid progress in visual representation learning, these methods generally treat objects and scenes using the same lens. In this paper, we focus on learning representations for objects and…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Songwei Ge , Shlok Mishra , Simon Kornblith , Chun-Liang Li , David Jacobs