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We investigate a strategy for improving the efficiency of contrastive learning of visual representations by leveraging a small amount of supervised information during pre-training. We propose a semi-supervised loss, SuNCEt, based on…

Machine Learning · Computer Science 2020-12-03 Mahmoud Assran , Nicolas Ballas , Lluis Castrejon , Michael Rabbat

This paper addresses the task of unsupervised learning of representations for action recognition in videos. Previous works proposed to utilize future prediction, or other domain-specific objectives to train a network, but achieved only…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 Pavel Tokmakov , Martial Hebert , Cordelia Schmid

The ability to autonomously learn behaviors via direct interactions in uninstrumented environments can lead to generalist robots capable of enhancing productivity or providing care in unstructured settings like homes. Such uninstrumented…

Robotics · Computer Science 2021-11-15 Rutav Shah , Vikash Kumar

In classic video action recognition, labels may not contain enough information about the diverse video appearance and dynamics, thus, existing models that are trained under the standard supervised learning paradigm may extract less…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Zhiyu Yao , Yunbo Wang , Mingsheng Long , Jianmin Wang , Philip S Yu , Jiaguang Sun

Recent single image unsupervised representation learning techniques show remarkable success on a variety of tasks. The basic principle in these works is instance discrimination: learning to differentiate between two augmented versions of…

Computer Vision and Pattern Recognition · Computer Science 2020-05-08 Daniel Gordon , Kiana Ehsani , Dieter Fox , Ali Farhadi

We introduce a novel self-supervised contrastive learning method to learn representations from unlabelled videos. Existing approaches ignore the specifics of input distortions, e.g., by learning invariance to temporal transformations.…

Computer Vision and Pattern Recognition · Computer Science 2021-12-08 Simon Jenni , Hailin Jin

We propose a self-supervised method for learning motion-focused video representations. Existing approaches minimize distances between temporally augmented videos, which maintain high spatial similarity. We instead propose to learn…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Fida Mohammad Thoker , Hazel Doughty , Cees Snoek

We propose a realistic scenario for the unsupervised video learning where neither task boundaries nor labels are provided when learning a succession of tasks. We also provide a non-parametric learning solution for the under-explored problem…

Computer Vision and Pattern Recognition · Computer Science 2025-09-01 Nattapong Kurpukdee , Adrian G. Bors

Anticipating actions and objects before they start or appear is a difficult problem in computer vision with several real-world applications. This task is challenging partly because it requires leveraging extensive knowledge of the world…

Computer Vision and Pattern Recognition · Computer Science 2016-12-01 Carl Vondrick , Hamed Pirsiavash , Antonio Torralba

Unsupervised representation learning aims at finding methods that learn representations from data without annotation-based signals. Abstaining from annotations not only leads to economic benefits but may - and to some extent already does -…

Computer Vision and Pattern Recognition · Computer Science 2023-12-04 Bonifaz Stuhr

This paper presents TCE: Temporally Coherent Embeddings for self-supervised video representation learning. The proposed method exploits inherent structure of unlabeled video data to explicitly enforce temporal coherency in the embedding…

Computer Vision and Pattern Recognition · Computer Science 2020-11-18 Joshua Knights , Ben Harwood , Daniel Ward , Anthony Vanderkop , Olivia Mackenzie-Ross , Peyman Moghadam

We use multilayer Long Short Term Memory (LSTM) networks to learn representations of video sequences. Our model uses an encoder LSTM to map an input sequence into a fixed length representation. This representation is decoded using single or…

Machine Learning · Computer Science 2016-01-05 Nitish Srivastava , Elman Mansimov , Ruslan Salakhutdinov

Recognizing transformation types applied to a video clip (RecogTrans) is a long-established paradigm for self-supervised video representation learning, which achieves much inferior performance compared to instance discrimination approaches…

Computer Vision and Pattern Recognition · Computer Science 2022-05-05 Haodong Duan , Nanxuan Zhao , Kai Chen , Dahua Lin

In this work, we focus on semi-supervised learning for video action detection which utilizes both labeled as well as unlabeled data. We propose a simple end-to-end consistency based approach which effectively utilizes the unlabeled data.…

Computer Vision and Pattern Recognition · Computer Science 2022-07-04 Akash Kumar , Yogesh Singh Rawat

This paper presents a novel yet intuitive approach to unsupervised feature learning. Inspired by the human visual system, we explore whether low-level motion-based grouping cues can be used to learn an effective visual representation.…

Computer Vision and Pattern Recognition · Computer Science 2017-04-13 Deepak Pathak , Ross Girshick , Piotr Dollár , Trevor Darrell , Bharath Hariharan

We present a novel approach to leverage large unlabeled datasets by pre-training state-of-the-art deep neural networks on randomly-labeled datasets. Specifically, we train the neural networks to memorize arbitrary labels for all the samples…

Machine Learning · Computer Science 2018-11-06 Vinaychandran Pondenkandath , Michele Alberti , Sammer Puran , Rolf Ingold , Marcus Liwicki

Despite huge success in the image domain, modern detection models such as Faster R-CNN have not been used nearly as much for video analysis. This is arguably due to the fact that detection models are designed to operate on single frames and…

Computer Vision and Pattern Recognition · Computer Science 2018-12-12 Gedas Bertasius , Christoph Feichtenhofer , Du Tran , Jianbo Shi , Lorenzo Torresani

Understanding and predicting video content is essential for planning and reasoning in dynamic environments. Despite advancements, unsupervised learning of object representations and dynamics remains challenging. We present VideoPCDNet, an…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Noel José Rodrigues Vicente , Enrique Lehner , Angel Villar-Corrales , Jan Nogga , Sven Behnke

For many applications with limited computation, communication, storage and energy resources, there is an imperative need of computer vision methods that could select an informative subset of the input video for efficient processing at or…

Computer Vision and Pattern Recognition · Computer Science 2018-05-09 Shuyue Lan , Rameswar Panda , Qi Zhu , Amit K. Roy-Chowdhury

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…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Di Yang , Yaohui Wang , Quan Kong , Antitza Dantcheva , Lorenzo Garattoni , Gianpiero Francesca , Francois Bremond