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A Survey of multimedia videoconferencing system and a proposal for a novel hybrid cloud and P2P architecture
2011
INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY
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In this paper, we describe a variety of proposed videoconferencing solutions and classify them according to characteristics such as network architectures and video coding technologies and we propose a ...
In this paper, we focus on videoconferencing systems, which represents the most complex type of video communication. ...
In this system, an optimal set of tree structures is determined for routing multi-rate content using scalable video coding. ...
doi:10.24297/ijct.v10i5.4148
fatcat:exv33vlilrhjlpwz2v5tll3w5q
Face location in wavelet-based video compression for high perceptual quality videoconferencing
1996
IEEE transactions on circuits and systems for video technology (Print)
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Abstruct-We present a human face location technique based on contour extraction within the framework of a wavelet-based video compression scheme for videoconferencing applications. ...
videoconferencing since the human face is often the most important portion within a frame and should be coded with high fidelity. ...
It has been applied to a wavelet-based image and video compression scheme designed primarily for videoconferencing. ...
doi:10.1109/76.510934
fatcat:aj4jlly6pff6fgniofaybql2li
Videoconferencing over packet-based networks
1997
IEEE Journal on Selected Areas in Communications
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Index Terms- Distributed MCU, packet video, rate control, videoconferencing, video mixing. I. ...
Solutions for the circuit-switched and packet-based networks differ considerably. ...
Finally, JPEG is best suited for very high-end videoconferencing applications due to its robustness and good video quality. ...
doi:10.1109/49.611162
fatcat:ml7ypz2infhirnaolcr3ckozni
Internet-Based Videoconferencing Coder/Decoders and Tools for Telemedicine
2011
Telemedicine journal and e-health
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Alternative videoconferencing technologies for providing telemedicine via the Internet are described. ...
Specific methods for encoding and decoding video are discussed and video applications that have been tested at the National Library of Medicine are reviewed. ...
Its principle components are the videoconferencing tool (VIC) 17 for video and the Robust Audio Tool 18 for audio. ...
doi:10.1089/tmj.2010.0193
pmid:21563926
pmcid:PMC3135256
fatcat:7uaf6f2x4vc37cmiu3ybmonhc4
Influence of packets losses on video quality in case of using multiple description coding with time division into two and three substreams
2015
2015 17th Conference of Open Innovations Association (FRUCT)
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The paper presents analysis of simultaneous use of multiple description coding (MDC) algorithm and multipath routing for IP-based videoconferencing system. ...
Experimental results are given for time division of video stream in two and three substreams, compressed by H.264 codec with different quality factors (Q) and different packet loss rates in network (from ...
ACKNOWLEDGMENT The work is supported by project No. 1060 as part of government task for scientific research in P.G. Demidov Yaroslavl State University. ...
doi:10.1109/fruct.2015.7117998
dblp:conf/fruct/TarakanovGN15
fatcat:jl6eev6uozcvxay7ji2qdteqau
Multimedia Networking
2007
Advances in Multimedia
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Multimedia contents (animation, audio, and video) are becoming increasingly popular on the Internet and are being accessed by a variety of networked devices through either wired or wireless links. ...
A large number of distributed multimedia applications have been created, including Internet telephony, Internet videoconferencing, on-demand streaming or broadcasting, IPTV, distance learning, entertainment ...
It presents a new scheme that integrates multiple-description coding (MDC), error-resilient video coding, and unequal error protection with a hybrid space-time coding structure for robust video transmission ...
doi:10.1155/2007/97262
fatcat:qusxlutasvg4pdseamrvhaeq7a
Enabling Composition-Based Video-Conferencing for the Home
2011
IEEE transactions on multimedia
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This paper describes a videoconferencing system that meets performance constraints and functional requirements for use in consumer homes. ...
The results validate our architectural decisions and provide a valuable input for further research in domestic videoconferencing. ...
Figure 7 : 7 Composition-Based video-conferencing in action. ...
doi:10.1109/tmm.2011.2159369
fatcat:odgsezqv2nhkhmokmhr6ouwmae
Performance Evaluation of Sign-Language Videoconference Traffic
2006
2006 Innovations in Information Technology
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This paper presents modeling results for sign language videoconference traces (H.261 and H.263 encoded) which were captured from realistic multipoint IP videoconference sessions between Greek signers. ...
traffic models against simulations, it is proven that the application of the proposed theoretical parameters into a generic continuous Markovian model can lead to a conservative, though accurate, solution for ...
Our generalization of the C-DAR(1) model is proven to be a robust solution for theoretical studies on videoconferencing for deaf people. ...
doi:10.1109/innovations.2006.301978
fatcat:6abb3htpqzhwxidk43qt2pk6pm
Exploring Nurse and Patient Experiences of Developing Rapport During Oncology Ambulatory Care Videoconferencing Visits: Protocol for Qualitative Study (Preprint)
2021
JMIR Research Protocols
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of interventions and evidence-based practice guidelines for relationship building during videoconferencing telehealth visits. ...
A research team trained in qualitative methodology will use conventional content analysis to analyze the data using first- and second-level codes derived directly from the transcribed text data. ...
There are many first-level coding methods, but based on this study's aim to capture the interpersonal experiences of nurses and patients who participate in videoconferencing visits, the coding method will ...
doi:10.2196/27940
pmid:34125073
fatcat:kkh3eoipvzeh3kgssbfotq3c5y
IP Video Conferencing: A Tutorial
[article]
2017
arXiv
pre-print
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Video conferencing is a well-established area of communications, which have been studied for decades. ...
This paper presents the main techniques behind the modern IP-based videoconferencing services, with a particular focus on codecs, network protocols, architectures and standardization efforts. ...
Before the wide adoption of SIP, it was the main protocol for videoconferencing, so many existing videoconferencing installations are still based on H.323. ...
arXiv:1711.03418v1
fatcat:mpgkldewqrbmblytackylsjegi
Peer-to-peer multipoint videoconferencing on the Internet
2005
Signal processing. Image communication
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A peer-to-peer architecture for multipoint videoconferencing is presented. Each conference participant may have asymmetric and dissimilar bandwidth connections to the Internet. ...
A protocol for a completely distributed implementation has been developed and tested on a prototype system extending a point-to-point video phone to a multipoint one. ...
In addition, CoopNet uses a multiple description coding method for the media content, which improves robustness and balances load among peers. ...
doi:10.1016/j.image.2005.05.003
fatcat:zzcxvnex7besnpgxejejyoaffu
Development Of Campus Video-Conference System Based On Peer-To-Peer Architecture
2014
Zenodo
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This paper describes the design and implementation of campus video conference system based on P2P architecture that was tested within premises of Ladoke Akintola University of Technology, Ogbomoso, Nigeria ...
The media stream engine is responsible for audio/video capture and playback, the conferencing control protocol defines a set of conventions governing the structure and behavior of communication messages ...
In this system, an optimal set of tree structures is determined for routing multi-rate content using scalable video coding (Schwarz et al, 2009 ). This system divides peers into many groups. ...
doi:10.5281/zenodo.1000201
fatcat:memzmpoemngzfpu6f6hsbuh5ni
Let's Meet at the Mobile - Learning Dialogs with a Video Conferencing Software for Mobile Devices
2009
International Journal of Interactive Mobile Technologies
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Index Terms-Mobile video-based learning, H.264/MPEG-4 AVC software codec, mobile conferencing, peer-to-peer group communication, distributed SIP conference management. I. ...
This approach allows for a spontaneous, location independent establishment of video dialogs, which is of particular importance in interactive learning scenarios. ...
Thus video coded learning content can be provided for pull on demand on mobiles. ...
doi:10.3991/ijim.v3i3.773
fatcat:xvo2e7xn7jcs7h2wwfc4b2zorq
Effective desktop videoconferencing with minimal network demands
2000
British Journal of Educational Technology
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The DVC tools comprised of Robust Audio Tool (RAT), VIC (video tool) and WB (shared whiteboard). ...
Limitations in current methods for assessing video channel quality are discussed, and a new scheme for tutorial content quality analysis is outlined. ...
doi:10.1111/1467-8535.00153
fatcat:7aeh3eccxjcwhh2pyvrwos3fi4
Linear Combination Of Face Views For Low Bit Rate Face Video Compression
1998
Zenodo
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Such model-based image coding techniques have recently received a lot of attention for the encoding of face images for videoconferencing applications [2, 3] . ...
However, sparse correspondence between the basis and novel face views is needed, so as in other knowledge-based coding approaches, a robust and fast scheme for detecting faces and control points, along ...
doi:10.5281/zenodo.36810
fatcat:7xwqrj4x2bcuborcawhgpztm2u
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