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Adversarial machine learning attacks on video action recognition models is a growing research area and many effective attacks were introduced in recent years. These attacks show that action recognition models can be breached in many ways.…

Cryptography and Security · Computer Science 2024-04-18 Furkan Mumcu , Yasin Yilmaz

As emotions play a central role in human communication, automatic emotion recognition has attracted increasing attention in the last two decades. While multimodal systems enjoy high performances on lab-controlled data, they are still far…

Machine Learning · Computer Science 2024-03-20 Denis Dresvyanskiy , Maxim Markitantov , Jiawei Yu , Peitong Li , Heysem Kaya , Alexey Karpov

Visual recognition is currently one of the most important and active research areas in computer vision, pattern recognition, and even the general field of artificial intelligence. It has great fundamental importance and strong industrial…

Computer Vision and Pattern Recognition · Computer Science 2022-08-24 Yang Wu , Dingheng Wang , Xiaotong Lu , Fan Yang , Guoqi Li , Weisheng Dong , Jianbo Shi

Recognizing every person's action in a crowded and cluttered environment is a challenging task. In this paper, we propose a real-time action recognition method, Action4D, which gives reliable and accurate results in the real-world settings.…

Computer Vision and Pattern Recognition · Computer Science 2018-06-08 Quanzeng You , Hao Jiang

Vehicle information recognition is crucial in various practical domains, particularly in criminal investigations. Vehicle Color Recognition (VCR) has garnered significant research interest because color is a visually distinguishable…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Gabriel E. Lima , Rayson Laroca , Eduardo Santos , Eduil Nascimento , David Menotti

In recent years, video action recognition, as a fundamental task in the field of video understanding, has been deeply explored by numerous researchers.Most traditional video action recognition methods typically involve converting videos…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Junlin Chen , Chengcheng Xu , Yangfan Xu , Jian Yang , Jun Li , Zhiping Shi

Video-based human action recognition is currently one of the most active research areas in computer vision. Various research studies indicate that the performance of action recognition is highly dependent on the type of features being…

Computer Vision and Pattern Recognition · Computer Science 2019-10-02 Lei Wang , Du Q. Huynh , Piotr Koniusz

Automatic human action recognition is indispensable for almost artificial intelligent systems such as video surveillance, human-computer interfaces, video retrieval, etc. Despite a lot of progress, recognizing actions in an unknown video is…

Computer Vision and Pattern Recognition · Computer Science 2018-03-22 Huy-Hieu Pham , Louahdi Khoudour , Alain Crouzil , Pablo Zegers , Sergio A. Velastin

We present a new action recognition deep neural network which adaptively learns the best action velocities in addition to the classification. While deep neural networks have reached maturity for image understanding tasks, we are still…

Computer Vision and Pattern Recognition · Computer Science 2016-03-23 Otkrist Gupta , Dan Raviv , Ramesh Raskar

Compared to abstract features, significant objects, so-called landmarks, are a more natural means for vehicle localization and navigation, especially in challenging unstructured environments. The major challenge is to recognize landmarks in…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Benjamin Naujoks , Patrick Burger , Hans-Joachim Wuensche

Recent studies show that the state-of-the-art deep neural networks (DNNs) are vulnerable to adversarial examples, resulting from small-magnitude perturbations added to the input. Given that that emerging physical systems are using DNNs in…

Cryptography and Security · Computer Science 2018-04-11 Kevin Eykholt , Ivan Evtimov , Earlence Fernandes , Bo Li , Amir Rahmati , Chaowei Xiao , Atul Prakash , Tadayoshi Kohno , Dawn Song

In recent years, significant progress has been made in image recognition technology based on deep neural networks. However, improving recognition performance under low-light conditions remains a significant challenge. This study addresses…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Seitaro Ono , Yuka Ogino , Takahiro Toizumi , Atsushi Ito , Masato Tsukada

We describe a latent approach that learns to detect actions in long sequences given training videos with only whole-video class labels. Our approach makes use of two innovations to attention-modeling in weakly-supervised learning. First,…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Phuc Xuan Nguyen , Deva Ramanan , Charless C. Fowlkes

Wearables are fundamental to improving our understanding of human activities, especially for an increasing number of healthcare applications from rehabilitation to fine-grained gait analysis. Although our collective know-how to solve Human…

Machine Learning · Computer Science 2020-07-15 Alireza Abedin , Mahsa Ehsanpour , Qinfeng Shi , Hamid Rezatofighi , Damith C. Ranasinghe

Video action detection (spatio-temporal action localization) is usually the starting point for human-centric intelligent analysis of videos nowadays. It has high practical impacts for many applications across robotics, security, healthcare,…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Xin Hu , Zhenyu Wu , Hao-Yu Miao , Siqi Fan , Taiyu Long , Zhenyu Hu , Pengcheng Pi , Yi Wu , Zhou Ren , Zhangyang Wang , Gang Hua

This paper performs the first investigation into depth for large-scale human action recognition in video where the depth cues are estimated from the videos themselves. We develop a new framework called depth2action and experiment thoroughly…

Computer Vision and Pattern Recognition · Computer Science 2016-08-16 Yi Zhu , Shawn Newsam

Humans learn by interacting with their environments and perceiving the outcomes of their actions. A landmark in artificial intelligence has been the development of deep reinforcement learning (dRL) algorithms capable of doing the same in…

This study presents a benchmark for evaluating action-constrained reinforcement learning (RL) algorithms. In action-constrained RL, each action taken by the learning system must comply with certain constraints. These constraints are crucial…

Machine Learning · Computer Science 2023-06-30 Kazumi Kasaura , Shuwa Miura , Tadashi Kozuno , Ryo Yonetani , Kenta Hoshino , Yohei Hosoe

Sensor-based human activity recognition (HAR), i.e., the ability to discover human daily activity patterns from wearable or embedded sensors, is a key enabler for many real-world applications in smart homes, personal healthcare, and urban…

Signal Processing · Electrical Eng. & Systems 2021-04-20 Saurav Jha , Martin Schiemer , Franco Zambonelli , Juan Ye

Fine-grained action recognition (FGAR) aims to identify subtle and distinctive differences among fine-grained action categories. However, current recognition methods often capture coarse-grained motion patterns but struggle to identify…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Baoli Sun , Yihan Wang , Xinzhu Ma , Zhihui Wang , Kun Lu , Zhiyong Wang