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In this work we introduce a fully end-to-end approach for action detection in videos that learns to directly predict the temporal bounds of actions. Our intuition is that the process of detecting actions is naturally one of observation and…

Computer Vision and Pattern Recognition · Computer Science 2017-03-14 Serena Yeung , Olga Russakovsky , Greg Mori , Li Fei-Fei

In the last few years, compression of deep neural networks has become an important strand of machine learning and computer vision research. Deep models require sizeable computational complexity and storage, when used for instance for Human…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Ayush Srivastava , Oshin Dutta , Prathosh AP , Sumeet Agarwal , Jigyasa Gupta

Amongst others, the adoption of Rectified Linear Units (ReLUs) is regarded as one of the ingredients of the success of deep learning. ReLU activation has been shown to mitigate the vanishing gradient issue, to encourage sparsity in the…

Machine Learning · Statistics 2021-10-14 Nicola Picchiotti , Marco Gori

Online action detection has attracted increasing research interests in recent years. Current works model historical dependencies and anticipate the future to perceive the action evolution within a video segment and improve the detection…

Computer Vision and Pattern Recognition · Computer Science 2022-03-23 Le Yang , Junwei Han , Dingwen Zhang

Video-based action recognition is one of the most popular topics in computer vision. With recent advances of selfsupervised video representation learning approaches, action recognition usually follows a two-stage training framework, i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2022-05-03 Yang Zhou , Zhanhao He , Keyu Lu , Guanhong Wang , Gaoang Wang

Unsupervised person re-ID is the task of identifying people on a target data set for which the ID labels are unavailable during training. In this paper, we propose to unify two trends in unsupervised person re-ID: clustering & fine-tuning…

Computer Vision and Pattern Recognition · Computer Science 2020-04-29 Guillaume Delorme , Yihong Xu , Stephane Lathuilière , Radu Horaud , Xavier Alameda-Pineda

The recognition of actions from video sequences has many applications in health monitoring, assisted living, surveillance, and smart homes. Despite advances in sensing, in particular related to 3D video, the methodologies to process the…

Computer Vision and Pattern Recognition · Computer Science 2018-10-03 Rui Zhao , Haider Ali , Patrick van der Smagt

The human vision and perception system is inherently incremental where new knowledge is continually learned over time whilst existing knowledge is retained. On the other hand, deep learning networks are ill-equipped for incremental…

Computer Vision and Pattern Recognition · Computer Science 2020-10-08 Can Peng , Kun Zhao , Brian C. Lovell

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

The temporal segmentation of events is an essential task and a precursor for the automatic recognition of human actions in the video. Several attempts have been made to capture frame-level salient aspects through attention but they lack the…

Computer Vision and Pattern Recognition · Computer Science 2020-05-08 Harshala Gammulle , Simon Denman , Sridha Sridharan , Clinton Fookes

Detecting action units is an important task in face analysis, especially in facial expression recognition. This is due, in part, to the idea that expressions can be decomposed into multiple action units. In this paper we investigate the…

Computer Vision and Pattern Recognition · Computer Science 2020-10-19 Saurabh Hinduja , Shaun Canavan , Saandeep Aathreya

Object recognition and detection are well-studied problems with a developed set of almost standard solutions. Identity documents recognition, classification, detection, and localization are the tasks required in a number of applications,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Mykola Kozlenko , Volodymyr Sendetskyi , Oleksiy Simkiv , Nazar Savchenko , Andy Bosyi

Interactive video segmentation often requires many user interventions for robust performance in challenging scenarios (e.g., occlusions, object separations, camouflage, etc.). Yet, even state-of-the-art models like SAM2 use corrections only…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Xinyu Yang , Haozheng Yu , Yihong Sun , Bharath Hariharan , Jennifer J. Sun

Predicting contextualised engagement in videos is a long-standing problem that has been popularly attempted by exploiting the number of views or the associated likes using different computational methods. The recent decade has seen a boom…

Artificial Intelligence · Computer Science 2022-01-19 Sujit Roy , Gnaneswara Rao Gorle , Vishal Gaur , Haider Raza , Shoaib Jameel

With the rapid development of low-cost consumer electronics and cloud computing, Internet-of-Things (IoT) devices are widely adopted for supporting next-generation distributed systems such as smart cities and industrial control systems. IoT…

Cryptography and Security · Computer Science 2024-01-23 Jiyuan Shen , Wenzhuo Yang , Zhaowei Chu , Jiani Fan , Dusit Niyato , Kwok-Yan Lam

Intrusion detection system (IDS) is a piece of hardware or software that looks for malicious activity or policy violations in a network. It looks for malicious activity or security flaws on a network or system. IDS protects hosts or…

Machine Learning · Computer Science 2024-11-01 Rajana Akter , Shahnure Rabib , Rahul Deb Mohalder , Laboni Paul , Ferdous Bin Ali

Traditional human activity recognition uses either direct image analysis or data from wearable inertial measurement units (IMUs), but can be ineffective in challenging underwater environments. We introduce a novel hybrid approach that…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Demetrious T. Kutzke , Ying-Kun Wu , Elizabeth Terveen , Junaed Sattar

Current methods for action recognition primarily rely on deep convolutional networks to derive feature embeddings of visual and motion features. While these methods have demonstrated remarkable performance on standard benchmarks, we are…

Computer Vision and Pattern Recognition · Computer Science 2020-05-21 Dian Shao , Yue Zhao , Bo Dai , Dahua Lin

Catastrophic forgetting of previous knowledge is a critical issue in continual learning typically handled through various regularization strategies. However, existing methods struggle especially when several incremental steps are performed.…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Chang Liu , Giulia Rizzoli , Francesco Barbato , Andrea Maracani , Marco Toldo , Umberto Michieli , Yi Niu , Pietro Zanuttigh

Instance segmentation is the problem of detecting and delineating each distinct object of interest appearing in an image. Current instance segmentation approaches consist of ensembles of modules that are trained independently of each other,…

Computer Vision and Pattern Recognition · Computer Science 2016-10-26 Bernardino Romera-Paredes , Philip H. S. Torr