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Action recognition is an important yet challenging task in computer vision. In this paper, we propose a novel deep-based framework for action recognition, which improves the recognition accuracy by: 1) deriving more precise features for…

Computer Vision and Pattern Recognition · Computer Science 2017-11-21 Weiyao Lin , Yang Mi , Jianxin Wu , Ke Lu , Hongkai Xiong

Human activity recognition is one of the most important tasks in computer vision and has proved useful in different fields such as healthcare, sports training and security. There are a number of approaches that have been explored to solve…

Computer Vision and Pattern Recognition · Computer Science 2023-05-01 Sheryl Mathew , Annapoorani Subramanian , Pooja , Balamurugan MS , Manoj Kumar Rajagopal

In this work we investigate the effect of the convolutional network depth on its accuracy in the large-scale image recognition setting. Our main contribution is a thorough evaluation of networks of increasing depth using an architecture…

Computer Vision and Pattern Recognition · Computer Science 2015-04-13 Karen Simonyan , Andrew Zisserman

The deep two-stream architecture exhibited excellent performance on video based action recognition. The most computationally expensive step in this approach comes from the calculation of optical flow which prevents it to be real-time. This…

Computer Vision and Pattern Recognition · Computer Science 2016-04-27 Bowen Zhang , Limin Wang , Zhe Wang , Yu Qiao , Hanli Wang

To address the problem of training on small datasets for action recognition tasks, most prior works are either based on a large number of training samples or require pre-trained models transferred from other large datasets to tackle…

Computer Vision and Pattern Recognition · Computer Science 2020-08-11 Haoyu Chen , Zitong Yu , Xin Liu , Wei Peng , Yoon Lee , Guoying Zhao

Motivated by the success of data-driven convolutional neural networks (CNNs) in object recognition on static images, researchers are working hard towards developing CNN equivalents for learning video features. However, learning video…

Computer Vision and Pattern Recognition · Computer Science 2015-05-19 Zhenzhong Lan , Dezhong Yao , Ming Lin , Shoou-I Yu , Alexander Hauptmann

Recently, 3D convolutional networks yield good performance in action recognition. However, optical flow stream is still needed to ensure better performance, the cost of which is very high. In this paper, we propose a fast but effective way…

Computer Vision and Pattern Recognition · Computer Science 2020-01-17 Li Tao , Xueting Wang , Toshihiko Yamasaki

Currently, video behavior recognition is one of the most foundational tasks of computer vision. The 2D neural networks of deep learning are built for recognizing pixel-level information such as images with RGB, RGB-D, or optical flow…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Zihan Wang , Yang Yang , Zhi Liu , Yifan Zheng

Since being introduced in 2020, Vision Transformers (ViT) has been steadily breaking the record for many vision tasks and are often described as ``all-you-need" to replace ConvNet. Despite that, ViTs are generally computational,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-11 Chuong H. Nguyen , Su Huynh , Vinh Nguyen , Ngoc Nguyen

Human action recognition is one of the challenging tasks in computer vision. The current action recognition methods use computationally expensive models for learning spatio-temporal dependencies of the action. Models utilizing RGB channels…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Labina Shrestha , Shikha Dubey , Farrukh Olimov , Muhammad Aasim Rafique , Moongu Jeon

Most two-stream action recognition networks apply the same convolutional backbone to both RGB and optical flow streams, ignoring the fact that the two modalities have fundamentally different structural properties. Optical flow captures…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Md. Afzalur Rahaman , Tahmid Rahman

Rapid progress in adversarial learning has enabled the generation of realistic-looking fake visual content. To distinguish between fake and real visual content, several detection techniques have been proposed. The performance of most of…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Bilal Yousaf , Muhammad Usama , Waqas Sultani , Arif Mahmood , Junaid Qadir

Deep convolutional neural network has made huge revolution and shown its superior performance on computer vision tasks such as classification and segmentation. Recent years, researches devote much effort to scaling down size of network…

Computer Vision and Pattern Recognition · Computer Science 2021-12-28 Yingdong Hu

Current state-of-the-art models for video action recognition are mostly based on expensive 3D ConvNets. This results in a need for large GPU clusters to train and evaluate such architectures. To address this problem, we present a…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Quanfu Fan , Chun-Fu Chen , Hilde Kuehne , Marco Pistoia , David Cox

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

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.…

Computer Vision and Pattern Recognition · Computer Science 2020-03-24 Sina Mohammadi , Sina Ghofrani Majelan , Shahriar B. Shokouhi

Recent two-stream deep Convolutional Neural Networks (ConvNets) have made significant progress in recognizing human actions in videos. Despite their success, methods extending the basic two-stream ConvNet have not systematically explored…

Computer Vision and Pattern Recognition · Computer Science 2017-04-03 Chih-Yao Ma , Min-Hung Chen , Zsolt Kira , Ghassan AlRegib

Unconstrained video recognition and Deep Convolution Network (DCN) are two active topics in computer vision recently. In this work, we apply DCNs as frame-based recognizers for video recognition. Our preliminary studies, however, show that…

Computer Vision and Pattern Recognition · Computer Science 2015-06-16 Yu-Chuan Su , Tzu-Hsuan Chiu , Chun-Yen Yeh , Hsin-Fu Huang , Winston H. Hsu

We propose V2CNet, a new deep learning framework to automatically translate the demonstration videos to commands that can be directly used in robotic applications. Our V2CNet has two branches and aims at understanding the demonstration…

Computer Vision and Pattern Recognition · Computer Science 2019-03-27 Anh Nguyen , Thanh-Toan Do , Ian Reid , Darwin G. Caldwell , Nikos G. Tsagarakis

Deep learning and convolutional neural networks (ConvNets) have been successfully applied to most relevant tasks in the computer vision community. However, these networks are computationally demanding and not suitable for embedded devices…

Computer Vision and Pattern Recognition · Computer Science 2016-06-20 Jose Alvarez , Lars Petersson