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The risk of unauthorized remote access of streaming video from networked cameras underlines the need for stronger privacy safeguards. We propose a lens-free coded aperture camera system for human action recognition that is…

Computer Vision and Pattern Recognition · Computer Science 2019-04-18 Zihao W. Wang , Vibhav Vineet , Francesco Pittaluga , Sudipta Sinha , Oliver Cossairt , Sing Bing Kang

The traditional methods of action recognition are not specific for the operator, thus results are easy to be disturbed when other actions are operated in videos. The network based on mixed convolutional resnet and RPN is proposed in this…

Computer Vision and Pattern Recognition · Computer Science 2020-01-08 Mingjie Li , Youqian Feng , Zhonghai Yin , Cheng Zhou , Fanghao Dong , Yuan Lin , Yuhao Dong

Fine-grained action recognition is attracting increasing attention due to the emerging demand of specific action understanding in real-world applications, whereas the data of rare fine-grained categories is very limited. Therefore, we…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Jiahao Wang , Yunhong Wang , Sheng Liu , Annan Li

Shot boundary detection in video is one of the key stages of video data processing. A new method for shot boundary detection based on several video features, such as color histograms and object boundaries, has been proposed. The developed…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Alexander Gushchin , Anastasia Antsiferova , Dmitriy Vatolin

This paper explores the impact of occlusions in video action detection. We facilitate this study by introducing five new benchmark datasets namely O-UCF and O-JHMDB consisting of synthetically controlled static/dynamic occlusions, OVIS-UCF…

Computer Vision and Pattern Recognition · Computer Science 2024-10-28 Rajat Modi , Vibhav Vineet , Yogesh Singh Rawat

This paper presents a novel approach for automatic recognition of human activities for video surveillance applications. We propose to represent an activity by a combination of category components, and demonstrate that this approach offers…

Computer Vision and Pattern Recognition · Computer Science 2015-03-03 Weiyao Lin , Ming-Ting Sun , Radha Poovendran , Zhengyou Zhang

Action recognition, which is formulated as a task to identify various human actions in a video, has attracted increasing interest from computer vision researchers due to its importance in various applications. Recently, appearance-based…

Computer Vision and Pattern Recognition · Computer Science 2020-11-26 Jack Humphreys , Zhe Chen , Dacheng Tao

Action recognition from video data forms a cornerstone with wide-ranging applications. Single-view action recognition faces limitations due to its reliance on a single viewpoint. In contrast, multi-view approaches capture complementary…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Yue Gao , Jiaxuan Lu , Siqi Li , Yipeng Li , Shaoyi Du

Neural networks build the foundation of several intelligent systems, which, however, are known to be easily fooled by adversarial examples. Recent advances made these attacks possible even in air-gapped scenarios, where the autonomous…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Ana Răduţoiu , Jan-Philipp Schulze , Philip Sperl , Konstantin Böttinger

Human action recognition has become one of the most active field of research in computer vision due to its wide range of applications, like surveillance, medical, industrial environments, smart homes, among others. Recently, deep learning…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Samuel Felipe dos Santos , Jurandy Almeida

We address the task of aligning CAD models to a video sequence of a complex scene containing multiple objects. Our method can process arbitrary videos and fully automatically recover the 9 DoF pose for each object appearing in it, thus…

Computer Vision and Pattern Recognition · Computer Science 2022-01-26 Kevis-Kokitsi Maninis , Stefan Popov , Matthias Nießner , Vittorio Ferrari

Human action recognition is an important application domain in computer vision. Its primary aim is to accurately describe human actions and their interactions from a previously unseen data sequence acquired by sensors. The ability to…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Hieu H. Pham , Louahdi Khoudour , Alain Crouzil , Pablo Zegers , Sergio A. Velastin

While many action recognition techniques have great success on public benchmarks, such performance is not necessarily replicated in real-world scenarios, where the data comes from specific application requirements. The specific real-world…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Saif Sayed , Vassilis Athitsos

The practical deployment of Visual Anomaly Detection (VAD) systems is hindered by their sensitivity to real-world imaging variations, particularly the complex interplay between viewpoint and illumination which drastically alters defect…

Computer Vision and Pattern Recognition · Computer Science 2025-05-19 Yunkang Cao , Yuqi Cheng , Xiaohao Xu , Yiheng Zhang , Yihan Sun , Yuxiang Tan , Yuxin Zhang , Xiaonan Huang , Weiming Shen

Beyond possessing large enough size to feed data hungry machines (eg, transformers), what attributes measure the quality of a dataset? Assuming that the definitions of such attributes do exist, how do we quantify among their relative…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Rajat Modi , Aayush Jung Rana , Akash Kumar , Praveen Tirupattur , Shruti Vyas , Yogesh Singh Rawat , Mubarak Shah

Marker-based motion capture (MoCap) systems have long been the gold standard for accurate 4D human modeling, yet their reliance on specialized hardware and markers limits scalability and real-world deployment. Advancing reliable markerless…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Yeeun Park , Miqdad Naduthodi , Suryansh Kumar

Face analytics benefits many multimedia applications. It consists of a number of tasks, such as facial emotion recognition and face parsing, and most existing approaches generally treat these tasks independently, which limits their…

Computer Vision and Pattern Recognition · Computer Science 2017-11-17 Jianshu Li , Shengtao Xiao , Fang Zhao , Jian Zhao , Jianan Li , Jiashi Feng , Shuicheng Yan , Terence Sim

In competitive combat sports like boxing, analyzing a boxers's performance statics is crucial for evaluating the quantity and variety of punches delivered during bouts. These statistics provide valuable data and feedback, which are…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Shashikanta Sahoo

Real-time cognitive workload monitoring is crucial in safety-critical environments, yet established measures are intrusive, expensive, or lack temporal resolution. We tested whether facial movement dynamics from a standard webcam could…

Facial expression recognition (FER) algorithms work well in constrained environments with little or no occlusion of the face. However, real-world face occlusion is prevalent, most notably with the need to use a face mask in the current…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Sridhar Sola , Darshan Gera