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Deep learning video analytic systems process live video feeds from multiple cameras with computer vision models deployed on edge or cloud. To optimize utility for these systems, which usually corresponds to query accuracy, efficient…

Networking and Internet Architecture · Computer Science 2023-06-28 Hongpeng Guo , Beitong Tian , Zhe Yang , Bo Chen , Qian Zhou , Shengzhong Liu , Klara Nahrstedt , Claudiu Danilov

Virtual Reality (VR) applications require high data rate for a high-quality immersive experience, in addition to low latency to avoid dizziness and motion sickness. One of the key wireless VR challenges is providing seamless connectivity…

Networking and Internet Architecture · Computer Science 2021-10-07 Mostafa Abdelrahman , Mohammed Elbamby , Vilho Räisänen

Recently, HTTP streaming has become very popular for delivering video over the Internet. For adaptivity, a provider should generate multiple versions of a video as well as the related metadata. Various adaptation methods have been proposed…

Multimedia · Computer Science 2015-11-10 Hung. T Le , Hai N. Nguyen , Nam Pham Ngoc , Anh T. Pham , Truong Cong Thang

Volumetric video is an emerging key technology for immersive representation of 3D spaces and objects. Rendering volumetric video requires lots of computational power which is challenging especially for mobile devices. To mitigate this, we…

Multimedia · Computer Science 2020-07-17 Serhan Gül , Dimitri Podborski , Thomas Buchholz , Thomas Schierl , Cornelius Hellge

Motivated by emerging vision-based intelligent services, we consider the problem of rate adaptation for high quality and low delay visual information delivery over wireless networks using scalable video coding. Rate adaptation in this…

Multimedia · Computer Science 2017-04-11 Hussein Al-Zubaidy , Viktoria Fodor , György Dán , Markus Flierl

Many XR applications require the delivery of volumetric video to users with six degrees of freedom (6-DoF) movements. Point Cloud has become a popular volumetric video format. A dense point cloud consumes much higher bandwidth than a 2D/360…

Multimedia · Computer Science 2024-10-04 Tongyu Zong , Yixiang Mao , Chen Li , Yong Liu , Yao Wang

Gaze is an essential prompt for analyzing human behavior and attention. Recently, there has been an increasing interest in determining gaze direction from facial videos. However, video gaze estimation faces significant challenges, such as…

Computer Vision and Pattern Recognition · Computer Science 2024-04-11 Swati Jindal , Mohit Yadav , Roberto Manduchi

The demand and usage of 360$^{\circ}$ video services are expected to increase. However, despite these services being highly bandwidth intensive, not much is known about the potential value that basic bandwidth saving techniques such as…

Multimedia · Computer Science 2021-12-30 Niklas Carlsson , Derek Eager

In the paper, we proposed a novel algorithm dedicated to adaptive video streaming based on HTTP. The algorithm employs a hybrid play-out strategy which combines two popular approaches: an estimation of network bandwidth and a control of a…

Networking and Internet Architecture · Computer Science 2015-11-03 Arkadiusz Biernacki

Bandwidth consumption is a significant concern for online video service providers. Practical video streaming systems usually use some form of HTTP streaming (progressive download) to let users download the video at a faster rate than the…

Multimedia · Computer Science 2014-04-11 Liang Chen , Yipeng Zhou , Dah Ming Chiu

Teleoperation provides human operator sophisticated perceptual and cognitive skills into an over the network control loop. It gives hope of addressing some challenges related to vehicular autonomy which is based on artificial intelligence…

Human-Computer Interaction · Computer Science 2023-04-28 Jai Prakash , Michele Vignati , Daniele Vignarca , Edoardo Sabbioni , Federico Cheli

Given the significant industrial growth of demand for virtual reality (VR), 360{\deg} video streaming is one of the most important VR applications that require cost-optimal solutions to achieve widespread proliferation of VR technology.…

Multimedia · Computer Science 2017-11-10 Cagri Ozcinar , Ana De Abreu , Sebastian Knorr , Aljosa Smolic

Video prediction, predicting future frames from the previous ones, has broad applications such as autonomous driving and weather forecasting. Existing state-of-the-art methods typically focus on extracting either spatial, temporal, or…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Xin Zheng , Ziang Peng , Yuan Cao , Hongming Shan , Junping Zhang

We propose a deep learning based novel prediction framework for enhanced bandwidth reduction in motion transfer enabled video applications such as video conferencing, virtual reality gaming and privacy preservation for patient health…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Xue Bai , Tasmiah Haque , Sumit Mohan , Yuliang Cai , Byungheon Jeong , Adam Halasz , Srinjoy Das

We propose a new method for the visual quality assessment of 360-degree (omnidirectional) videos. The proposed method is based on computing multiple spatio-temporal objective quality features on viewports extracted from 360-degree videos. A…

Multimedia · Computer Science 2021-05-04 Roberto G. de A. Azevedo , Neil Birkbeck , Ivan Janatra , Balu Adsumilli , Pascal Frossard

Predicting human motion is critical for assistive robots and AR/VR applications, where the interaction with humans needs to be safe and comfortable. Meanwhile, an accurate prediction depends on understanding both the scene context and human…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Yang Zheng , Yanchao Yang , Kaichun Mo , Jiaman Li , Tao Yu , Yebin Liu , C. Karen Liu , Leonidas J. Guibas

Video streaming often requires transcoding content into different resolutions and bitrates to match the recipient's internet speed and screen capabilities. Video encoders like x264 offer various presets, each with different tradeoffs…

A key challenge of 360$^\circ$ VR video streaming is ensuring high quality with limited network bandwidth. Currently, most studies focus on tile-based adaptive bitrate streaming to reduce bandwidth consumption, where resources in network…

Multimedia · Computer Science 2024-04-24 Haopeng Wang , Haiwei Dong , Abdulmotaleb El Saddik

Devising intelligent agents able to live in an environment and learn by observing the surroundings is a longstanding goal of Artificial Intelligence. From a bare Machine Learning perspective, challenges arise when the agent is prevented…

Computer Vision and Pattern Recognition · Computer Science 2022-04-27 Matteo Tiezzi , Simone Marullo , Lapo Faggi , Enrico Meloni , Alessandro Betti , Stefano Melacci

360{\deg} videos require significant bandwidth to provide an immersive viewing experience. Wireless systems using terahertz (THz) frequency band can meet this high data rate demand. However, self-blockage is a challenge in such systems. To…

Image and Video Processing · Electrical Eng. & Systems 2024-12-10 Mehdi Setayesh , Vincent W. S. Wong