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The Audio-Visual Video Parsing task aims to identify and temporally localize the events that occur in either or both the audio and visual streams of audible videos. It often performs in a weakly-supervised manner, where only video event…

计算机视觉与模式识别 · 计算机科学 2024-06-04 Jinxing Zhou , Dan Guo , Yiran Zhong , Meng Wang

Temporal localization remains an important challenge in video understanding. In this work, we present our solution to the 3rd YouTube-8M Video Understanding Challenge organized by Google Research. Participants were required to build a…

计算机视觉与模式识别 · 计算机科学 2019-11-19 Lijun Zhang , Srinath Nizampatnam , Ahana Gangopadhyay , Marcos V. Conde

Previous work on long-term video action recognition relies on deep 3D-convolutional models that have a large temporal receptive field (RF). We argue that these models are not always the best choice for temporal modeling in videos. A large…

计算机视觉与模式识别 · 计算机科学 2023-08-23 Ombretta Strafforello , Xin Liu , Klamer Schutte , Jan van Gemert

The success of deep neural networks generally requires a vast amount of training data to be labeled, which is expensive and unfeasible in scale, especially for video collections. To alleviate this problem, in this paper, we propose…

计算机视觉与模式识别 · 计算机科学 2019-04-05 Longlong Jing , Xiaodong Yang , Jingen Liu , Yingli Tian

Robust face clustering is a vital step in enabling computational understanding of visual character portrayal in media. Face clustering for long-form content is challenging because of variations in appearance and lack of supporting…

计算机视觉与模式识别 · 计算机科学 2022-03-01 Krishna Somandepalli , Rajat Hebbar , Shrikanth Narayanan

Research on video activity detection has primarily focused on identifying well-defined human activities in short video segments. The majority of the research on video activity recognition is focused on the development of large parameter…

计算机视觉与模式识别 · 计算机科学 2024-03-19 Venkatesh Jatla , Sravani Teeparthi , Ugesh Egala , Sylvia Celedon Pattichis , Marios S. Patticis

We propose a weakly-supervised framework for action labeling in video, where only the order of occurring actions is required during training time. The key challenge is that the per-frame alignments between the input (video) and label…

计算机视觉与模式识别 · 计算机科学 2016-07-29 De-An Huang , Li Fei-Fei , Juan Carlos Niebles

While many action recognition datasets consist of collections of brief, trimmed videos each containing a relevant action, videos in the real-world (e.g., on YouTube) exhibit very different properties: they are often several minutes long,…

计算机视觉与模式识别 · 计算机科学 2019-09-02 Bruno Korbar , Du Tran , Lorenzo Torresani

Continual learning has recently attracted attention from the research community, as it aims to solve long-standing limitations of classic supervisedly-trained models. However, most research on this subject has tackled continual learning in…

计算机视觉与模式识别 · 计算机科学 2023-04-27 Giulia Castagnolo , Concetto Spampinato , Francesco Rundo , Daniela Giordano , Simone Palazzo

The goal of this paper is to determine the spatio-temporal location of actions in video. Where training from hard to obtain box annotations is the norm, we propose an intuitive and effective algorithm that localizes actions from their class…

计算机视觉与模式识别 · 计算机科学 2017-12-14 Pascal Mettes , Cees G. M. Snoek , Shih-Fu Chang

In this paper we introduce the problem of Visual Semantic Role Labeling: given an image we want to detect people doing actions and localize the objects of interaction. Classical approaches to action recognition either study the task of…

计算机视觉与模式识别 · 计算机科学 2015-05-19 Saurabh Gupta , Jitendra Malik

We address the problem of data augmentation for video action recognition. Standard augmentation strategies in video are hand-designed and sample the space of possible augmented data points either at random, without knowing which augmented…

计算机视觉与模式识别 · 计算机科学 2022-07-26 Shreyank N Gowda , Marcus Rohrbach , Frank Keller , Laura Sevilla-Lara

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.…

计算机视觉与模式识别 · 计算机科学 2022-07-04 Akash Kumar , Yogesh Singh Rawat

Video foundation models achieve strong performance across many video understanding tasks, but typically require large-scale pre-training on massive video datasets, resulting in substantial data and compute costs. In contrast, modern image…

计算机视觉与模式识别 · 计算机科学 2026-05-20 Svetlana Orlova , Niccolò Cavagnero , Gijs Dubbelman

Temporal segmentation of long videos is an important problem, that has largely been tackled through supervised learning, often requiring large amounts of annotated training data. In this paper, we tackle the problem of self-supervised…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Sathyanarayanan N. Aakur , Sudeep Sarkar

This paper focuses on task recognition and action segmentation in weakly-labeled instructional videos, where only the ordered sequence of video-level actions is available during training. We propose a two-stream framework, which exploits…

计算机视觉与模式识别 · 计算机科学 2021-10-13 Reza Ghoddoosian , Saif Sayed , Vassilis Athitsos

Despite the fact that notable improvements have been made recently in the field of feature extraction and classification, human action recognition is still challenging, especially in images, in which, unlike videos, there is no motion.…

计算机视觉与模式识别 · 计算机科学 2020-03-24 Sina Mohammadi , Sina Ghofrani Majelan , Shahriar B. Shokouhi

Large-scale pretraining of visual representations has led to state-of-the-art performance on a range of benchmark computer vision tasks, yet the benefits of these techniques at extreme scale in complex production systems has been relatively…

计算机视觉与模式识别 · 计算机科学 2021-08-13 Josh Beal , Hao-Yu Wu , Dong Huk Park , Andrew Zhai , Dmitry Kislyuk

A major challenge for modern AI is to learn to understand the world and learn to act largely by observation. This paper explores a self-supervised approach that combines internet-scale video data with a small amount of interaction data…

Pre-trained vision-language models learn massive data to model unified representations of images and natural languages, which can be widely applied to downstream machine learning tasks. In addition to zero-shot inference, in order to better…

计算机视觉与模式识别 · 计算机科学 2024-06-28 Qian-Wei Wang , Yuqiu Xie , Letian Zhang , Zimo Liu , Shu-Tao Xia