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The goal of this paper is to detect the spatio-temporal extent of an action. The two-stream detection network based on RGB and flow provides state-of-the-art accuracy at the expense of a large model-size and heavy computation. We propose to…

计算机视觉与模式识别 · 计算机科学 2019-06-12 Jiaojiao Zhao , Cees G. M. Snoek

Many previous audio-visual voice-related works focus on speech, ignoring the singing voice in the growing number of musical video streams on the Internet. For processing diverse musical video data, voice activity detection is a necessary…

声音 · 计算机科学 2021-06-23 Yuanbo Hou , Zhesong Yu , Xia Liang , Xingjian Du , Bilei Zhu , Zejun Ma , Dick Botteldooren

Temporal action detection (TAD) aims to detect the semantic labels and boundaries of action instances in untrimmed videos. Current mainstream approaches are multi-step solutions, which fall short in efficiency and flexibility. In this…

计算机视觉与模式识别 · 计算机科学 2022-04-07 Shimin Chen , Chen Chen , Wei Li , Xunqiang Tao , Yandong Guo

The strong temporal consistency of surveillance video enables compelling compression performance with traditional methods, but downstream vision applications operate on decoded image frames with a high data rate. Since it is not…

多媒体 · 计算机科学 2024-02-09 Andrew C. Freeman , Ketan Mayer-Patel , Montek Singh

Group activity detection in multi-person scenes is challenging due to complex human interactions, occlusions, and variations in appearance over time. This work presents a computer vision based framework for group activity recognition and…

The task of spatial-temporal action detection has attracted increasing attention among researchers. Existing dominant methods solve this problem by relying on short-term information and dense serial-wise detection on each individual frames…

计算机视觉与模式识别 · 计算机科学 2020-09-01 Yuxi Li , Weiyao Lin , Tao Wang , John See , Rui Qian , Ning Xu , Limin Wang , Shugong Xu

Deep convolutional networks have achieved great success for object recognition in still images. However, for action recognition in videos, the improvement of deep convolutional networks is not so evident. We argue that there are two reasons…

计算机视觉与模式识别 · 计算机科学 2015-07-09 Limin Wang , Yuanjun Xiong , Zhe Wang , Yu Qiao

Device activity detection in the emerging cell-free massive multiple-input multiple-output (MIMO) systems has been recognized as a crucial task in machine-type communications, in which multiple access points (APs) jointly identify the…

信息论 · 计算机科学 2022-10-04 Yang Li , Qingfeng Lin , Ya-Feng Liu , Bo Ai , Yik-Chung Wu

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…

计算机视觉与模式识别 · 计算机科学 2021-07-27 Quanfu Fan , Chun-Fu Chen , Hilde Kuehne , Marco Pistoia , David Cox

With exponential increase in the availability oftelemetry / streaming / real-time data, understanding contextualbehavior changes is a vital functionality in order to deliverunrivalled customer experience and build high performance andhigh…

社会与信息网络 · 计算机科学 2019-02-19 Amit Kumar , Tanya Ahuja , Rajesh Kumar Madabhattula , Murali Kante , Srinivasa Rao Aravilli

In IoT based distributed network of cameras, real-time multi-camera video analytics is challenged by high bandwidth demands and redundant visual data, creating a fundamental tension where reducing data saves network overhead but can degrade…

计算机视觉与模式识别 · 计算机科学 2025-08-14 Ragini Gupta , Lingzhi Zhao , Jiaxi Li , Volodymyr Vakhniuk , Claudiu Danilov , Josh Eckhardt , Keyshla Bernard , Klara Nahrstedt

Action recognition is a fundamental problem in computer vision with a lot of potential applications such as video surveillance, human computer interaction, and robot learning. Given pre-segmented videos, the task is to recognize actions…

计算机视觉与模式识别 · 计算机科学 2017-06-28 Ahsan Iqbal , Alexander Richard , Hilde Kuehne , Juergen Gall

GPUs are widely used to accelerate many important classes of workloads today. However, we observe that several important emerging classes of workloads, including simulation engines for deep reinforcement learning and dynamic neural…

硬件体系结构 · 计算机科学 2024-01-24 Sankeerth Durvasula , Adrian Zhao , Raymond Kiguru , Yushi Guan , Zhonghan Chen , Nandita Vijaykumar

Action recognition and anticipation are key to the success of many computer vision applications. Existing methods can roughly be grouped into those that extract global, context-aware representations of the entire image or sequence, and…

计算机视觉与模式识别 · 计算机科学 2016-11-21 Mohammad Sadegh Aliakbarian , Fatemehsadat Saleh , Basura Fernando , Mathieu Salzmann , Lars Petersson , Lars Andersson

Understanding human activity is a crucial aspect of developing intelligent robots, particularly in the domain of human-robot collaboration. Nevertheless, existing systems encounter challenges such as over-segmentation, attributed to errors…

机器人学 · 计算机科学 2024-10-11 Hao Xing , Darius Burschka

Many video understanding tasks work in the offline setting by assuming that the input video is given from the start to the end. However, many real-world problems require the online setting, making a decision immediately using only the…

计算机视觉与模式识别 · 计算机科学 2021-04-19 Young Hwi Kim , Seonghyeon Nam , Seon Joo Kim

Cloud systems are becoming increasingly powerful and complex. It is highly challenging to identify anomalous execution behaviors and pinpoint problems by examining the overwhelming intermediate results/states in complex application…

人机交互 · 计算机科学 2022-01-03 Shaolun Ruan , Yong Wang , Hailong Jiang , Weijia Xu , Qiang Guan

Runtime quantification of vehicle operational intensity is essential for predictive maintenance and condition monitoring in commercial and heavy-duty fleets. Traditional metrics like mileage fail to capture mechanical burden, while…

机器学习 · 计算机科学 2026-02-12 Enzo Nicolas Spotorno , Antonio Augusto Medeiros Frohlich

With diverse IoT workloads, placing compute and analytics close to where data is collected is becoming increasingly important. We seek to understand what is the performance and the cost implication of running analytics on IoT data at the…

计算机视觉与模式识别 · 计算机科学 2020-12-10 Karthick Shankar , Pengcheng Wang , Ran Xu , Ashraf Mahgoub , Somali Chaterji

Human Activity Recognition has gained significant attention due to its diverse applications, including ambient assisted living and remote sensing. Wearable sensor-based solutions often suffer from user discomfort and reliability issues,…