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Automatically detecting violence from surveillance footage is a subset of activity recognition that deserves special attention because of its wide applicability in unmanned security monitoring systems, internet video filtration, etc. In…

Computer Vision and Pattern Recognition · Computer Science 2021-10-08 Zahidul Islam , Mohammad Rukonuzzaman , Raiyan Ahmed , Md. Hasanul Kabir , Moshiur Farazi

Typical human actions last several seconds and exhibit characteristic spatio-temporal structure. Recent methods attempt to capture this structure and learn action representations with convolutional neural networks. Such representations,…

Computer Vision and Pattern Recognition · Computer Science 2017-06-05 Gül Varol , Ivan Laptev , Cordelia Schmid

Recently, pose-based action recognition has gained more and more attention due to the better performance compared with traditional appearance-based methods. However, there still exist two problems to be further solved. First, existing…

Computer Vision and Pattern Recognition · Computer Science 2018-05-23 Wei Wang , Jinjin Zhang , Chenyang Si , Liang Wang

For the two-stream style methods in action recognition, fusing the two streams' predictions is always by the weighted averaging scheme. This fusion method with fixed weights lacks of pertinence to different action videos and always needs…

Computer Vision and Pattern Recognition · Computer Science 2017-09-14 Jiagang Zhu , Wei Zou , Zheng Zhu

With the rapid development of deep learning algorithms, action recognition in video has achieved many important research results. One issue in action recognition, Zero-Shot Action Recognition (ZSAR), has recently attracted considerable…

Computer Vision and Pattern Recognition · Computer Science 2020-04-24 Dong Cao , Lisha Xu , HaiBo Chen

Standard methods for video recognition use large CNNs designed to capture spatio-temporal data. However, training these models requires a large amount of labeled training data, containing a wide variety of actions, scenes, settings and…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 AJ Piergiovanni , Michael S. Ryoo

We propose a novel approach based on deep Convolutional Neural Networks (CNN) to recognize human actions in still images by predicting the future motion, and detecting the shape and location of the salient parts of the image. We make the…

Computer Vision and Pattern Recognition · Computer Science 2017-05-15 Marjaneh Safaei , Hassan Foroosh

Motivation: Recognizing human actions in a video is a challenging task which has applications in various fields. Previous works in this area have either used images from a 2D or 3D camera. Few have used the idea that human actions can be…

Computer Vision and Pattern Recognition · Computer Science 2016-12-21 Adhavan Jayabalan , Harish Karunakaran , Shravan Murlidharan , Tesia Shizume

In this paper, a novel video classification method is presented that aims to recognize different categories of third-person videos efficiently. Our motivation is to achieve a light model that could be trained with insufficient training…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Ali Javidani , Ahmad Mahmoudi-Aznaveh

In highway scenarios, an alert human driver will typically anticipate early cut-in/cut-out maneuvers of surrounding vehicles using visual cues mainly. Autonomous vehicles must anticipate these situations at an early stage too, to increase…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Mahdi Biparva , David Fernández-Llorca , Rubén Izquierdo-Gonzalo , John K. Tsotsos

Learning to represent videos is a very challenging task both algorithmically and computationally. Standard video CNN architectures have been designed by directly extending architectures devised for image understanding to include the time…

Computer Vision and Pattern Recognition · Computer Science 2020-05-28 Michael S. Ryoo , AJ Piergiovanni , Mingxing Tan , Anelia Angelova

In recent years, a number of approaches based on 2D or 3D convolutional neural networks (CNN) have emerged for video action recognition, achieving state-of-the-art results on several large-scale benchmark datasets. In this paper, we carry…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Chun-Fu Chen , Rameswar Panda , Kandan Ramakrishnan , Rogerio Feris , John Cohn , Aude Oliva , Quanfu Fan

It is difficult to recover the motion field from a real-world footage given a mixture of camera shake and other photometric effects. In this paper we propose a hybrid framework by interleaving a Convolutional Neural Network (CNN) and a…

Computer Vision and Pattern Recognition · Computer Science 2017-04-20 Wenbin Li , Da Chen , Zhihan Lv , Yan Yan , Darren Cosker

Wearable cameras are becoming more and more popular in several applications, increasing the interest of the research community in developing approaches for recognizing actions from the first-person point of view. An open challenge in…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Mirco Planamente , Andrea Bottino , Barbara Caputo

Falling of elderly people who are staying alone at home leads to health risks. If they are not attended immediately even it may lead to fatal danger to their life. In this paper a novel computer vision-based system for smart monitoring of…

Computer Vision and Pattern Recognition · Computer Science 2020-09-08 L. Aneesh Euprazia , K. K. Thyagharajan

Learning reliable motion representation between consecutive frames, such as optical flow, has proven to have great promotion to video understanding. However, the TV-L1 method, an effective optical flow solver, is time-consuming and…

Computer Vision and Pattern Recognition · Computer Science 2021-03-08 Xiaohang Yang , Lingtong Kong , Jie Yang

We propose a novel deep supervised neural network for the task of action recognition in videos, which implicitly takes advantage of visual tracking and shares the robustness of both deep Convolutional Neural Network (CNN) and Recurrent…

Computer Vision and Pattern Recognition · Computer Science 2016-07-12 Jialin Wu , Gu Wang , Wukui Yang , Xiangyang Ji

In this work we present a new efficient approach to Human Action Recognition called Video Transformer Network (VTN). It leverages the latest advances in Computer Vision and Natural Language Processing and applies them to video…

Computer Vision and Pattern Recognition · Computer Science 2019-05-22 Alexander Kozlov , Vadim Andronov , Yana Gritsenko

Capsule networks (CapsNets) have recently shown promise to excel in most computer vision tasks, especially pertaining to scene understanding. In this paper, we explore CapsNet's capabilities in optical flow estimation, a task at which…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Vinoj Jayasundara , Debaditya Roy , Basura Fernando

Deep neural networks have achieved remarkable success for video-based action recognition. However, most of existing approaches cannot be deployed in practice due to the high computational cost. To address this challenge, we propose a new…

Computer Vision and Pattern Recognition · Computer Science 2020-06-18 Kun Liu , Wu Liu , Huadong Ma , Mingkui Tan , Chuang Gan
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