4,229 Hits in 3.0 sec

A temporally scalable video codec and its applications to a video conferencing system with dynamic network adaption for mobiles

Hans Cycon, Thomas Schmidt, Matthias Wahlisch, Detlev Marpe, Martin Winken
2011 IEEE transactions on consumer electronics  
The system is built upon a low complexity scalable extension of our H.264 codec DAVC, and a congestion-aware dynamic adaptation layer.  ...  Derived of delay variation measures, senders exploit scalable video layering to adapt the video transmission to varying network conditions.  ...  In general, a video bit stream is called scalable when parts of it can be removed in a way that the resulting sub-stream forms another valid bit sequence for some target decoder.  ... 
doi:10.1109/tce.2011.6018901 fatcat:ojo56dwxvzcufcmyqvyt5tfggq

Media coding for the next generation mobile system LTE

Kari Järvinen, Imed Bouazizi, Lasse Laaksonen, Pasi Ojala, Anssi Rämö
2010 Computer Communications  
resolutions for video.  ...  The LTE codecs are expected to improve the basic signal quality, but also to offer new capabilities such as extended audio bandwidth, stereo and multi-channels for voice and higher temporal and spatial  ...  Acknowledgements The authors thank the members of 3GPP SA1 and SA4 working groups for their efforts for new media codecs for LTE.  ... 
doi:10.1016/j.comcom.2010.04.019 fatcat:hhenoekd4rcznjghprnilat7z4

A Tutorial on H.264/SVC Scalable Video Coding and its Tradeoff between Quality, Coding Efficiency and Performance [chapter]

Iraide Unanue, Inigo Urteaga, Ronaldo Husemann, Javier Del, Valter Roesler, Aitor Rodriguez, Pedro Sanchez
2011 Recent Advances on Video Coding  
offered by this scalable codec, but also for the features of the resulting video stream.  ...  As a means to understand each SNR scalability granularity mode of H.264/SVC, the internal correlation between layers for a two-layer video stream can be observed in Figure 6 .  ...  A Tutorial on H.264/SVC Scalable Video Coding and its Tradeoff between Quality, Coding Efficiency and Performance, Recent Advances on Video Coding, Dr.  ... 
doi:10.5772/19227 fatcat:3eownv4ypze5hgbvipra5hakve

Layered self-identifiable and scalable video codec for delivery to heterogeneous receivers

Wei Feng, Ashraf A. Kassim, Chen-Khong Tham, Touradj Ebrahimi, Thomas Sikora
2003 Visual Communications and Image Processing 2003  
This paper describes the development of a layered structure of a multi-resolutional scalable video codec based on the Color Set Partitioning in Hierarchical Trees (CSPIHT) scheme.  ...  Also, it provides (spatial) resolution/ frame rate scalability from one embedded bit stream. The codec is self-identifiable since it labels the encoded bit stream according to the resolution.  ...  Tan Eng Hong for his valuable inputs on the 3-D CSPIHT.  ... 
doi:10.1117/12.503021 fatcat:en2we7ifnzcqbklu77h44ekbxq

Subjective evaluation of scalable video coding for content distribution

Jong-Seok Lee, Francesca De Simone, Naeem Ramzan, Zhijie Zhao, Engin Kurutepe, Thomas Sikora, Jörn Ostermann, Ebroul Izquierdo, Touradj Ebrahimi
2010 Proceedings of the international conference on Multimedia - MM '10  
Extensive subjective tests are conducted by using two different scalable video codecs and high definition contents.  ...  We aim at providing guidelines for an adaptation strategy of SVC that can select the optimal scalability options for resource-constrained networks.  ...  Furthermore, the authors gratefully acknowledge the support of the Swiss National Foundation for Scientific Research in the framework of the NCCR Interactive Multimodal Information Management (IM2).  ... 
doi:10.1145/1873951.1873981 dblp:conf/mm/LeeSRZKSOIE10 fatcat:bpg2fiegqndhvmuiqg5i644iri

Codec-Independent Scalable Distributed Video Coding

Mourad Ouaret, Frederic Dufaux, Touradj Ebrahimi
2007 2007 IEEE International Conference on Image Processing  
In this paper, we introduce novel schemes for scalable Distributed Video Coding (DVC), dealing with temporal, spatial and quality scalabilities.  ...  Note that this scalable DVC approach is independent from the codec used to encode or decode the base layer.  ...  ACKNOWLEDGEMENTS This work was developed within DISCOVER, a European Project (, funded under the European Commission IST FP6 programme.  ... 
doi:10.1109/icip.2007.4379233 dblp:conf/icip/OuaretDE07 fatcat:j76xgkzsffbgvgjsysxaxkx2rq

Cross-layer optimization for the Scalable Video Codec over WLAN

Carolina Blanch, Tong Gan, Antoine Dejonghe, Bart Masschelein
2009 2009 17th International Packet Video Workshop  
We then exploit the Power-Rate tradeoffs and flexibility of the Scalable Video Codec.  ...  For this purpose, we develop a cross-layer approach that explores the tradeoff between coding and communication energies.  ...  With the MGS concept, any enhancement layer NAL unit can be discarded from a quality scalable bit stream, and thus packet-based quality scalable coding is possible.  ... 
doi:10.1109/packet.2009.5152164 fatcat:nhzs6co2cbhhpoeebax53cjoyu

Internet Video-Streaming [chapter]

Bernd Girod, Niko Färber, Klaus Stuhlmüller
1999 Multimedia Communications  
Then we present a non-compliant fully scalable video codec based on a spatio-temporal resolution pyramid that is available as a Netscape plugin for the World Wide Web.  ...  Scalable video codecs, generating bit-streams decodable at di erent rates, have been proposed to address the heterogeneity problem.  ...  Scalable video codecs can substantially improve the quality of video services for many applications.  ... 
doi:10.1007/978-1-4471-0859-7_45 fatcat:wnrndswdpvenlherzk7ke7sio4

Scalable Video Multicast over MANETs

Amir Asif, Uyen Nguyen, Guohua Xu
2006 2006 IEEE Workshop on Multimedia Signal Processing  
The proposed framework uses the scalable, noncausal predictive codec with vector quantization and conditional replenishment (SNPNVQR) for encoding video into multiple layers of data streams at bit rates  ...  The paper presents a video multicasting architecture for mobile ad-hoc networks (MANETs).  ...  Network/Receiver Heterogeneities: In order to accommodate a wide range of mobile devices, SNPIVQR offers scalable coding where the video is encoded into multiple layers of data streams.  ... 
doi:10.1109/mmsp.2006.285340 dblp:conf/mmsp/AsifNX06 fatcat:2572ydzxp5a6vlild7uuukd4ci

Efficient Scalable Motion Coding For Wide-Range Scalable Video Compression

C. Guillemot, Edouard Francois, Guillaume Boisson
2004 Zenodo  
6Mbps (high-quality TV) down to QCIF 64Kbps (mobile video streaming) For a scalable video coder to remain efficient over such a wide range of bit-rates and resolutions, some form of scalability must exist  ...  process for scalable video coding [1] .  ... 
doi:10.5281/zenodo.38492 fatcat:baoe23ws3zdabb4gdjunyhlybm

IP Video Conferencing: A Tutorial [article]

Roman Sorokin, Jean-Louis Rougier
2017 arXiv   pre-print
Video conferencing is a well-established area of communications, which have been studied for decades.  ...  A description of a typical video conference scenario is provided, demonstrating how the technologies, responsible for different conference aspects, are working together.  ...  With SVC, a high-quality video stream is divided into several layers of quality. For instance in Fig 6, the three layers are sent on the network.  ... 
arXiv:1711.03418v1 fatcat:mpgkldewqrbmblytackylsjegi

FSVC: A New Fully Scalable Video Codec [chapter]

M. F. López, S. G. Rodríguez, J. P. Ortiz, J. M. Dana, V. G. Ruiz, I. García
2005 Lecture Notes in Computer Science  
This work describes FSVC (Fully Scalable Video Codec), a scalable video compression system which is able to generate temporal-, spatial-and quality-scalable video streams.  ...  FSVC is very suitable for video-on-demand applications where a single version of the compressed video sequence is used.  ...  Introduction Scalable video coding is a technique which allows a compressed video stream to be decoded in several different ways.  ... 
doi:10.1007/11556121_22 fatcat:fouwegcyuzbh7ccvxwihpog6yu

Versatile multiview layered video based on distributed source coding

G. Petrazzuoli, C. Macovei, I.-E. Nicolae, M. Cagnazzo, F. Dufaux, B. Pesquet-Popescu
2013 2013 14th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS)  
An interesting alternative to classical scalable video is to use distributed video coding (DVC) for the enhancement layers.  ...  This is allowed by the capillary spreading of video codec technologies: nowadays, every computer, tablet and smart phone is equipped with video encoding and decoding technologies.  ...  In this codec, the video stream is split into Key Frames (KFs) and Wyner-Ziv Frames (WZFs).  ... 
doi:10.1109/wiamis.2013.6616157 dblp:conf/wiamis/PetiazzuoliMNCDP13 fatcat:w7bufmidmrbavmgn6odvp2myq4

A comparative study of scalable video coding schemes utilizing wavelet technology

Peter Schelkens, Yiannis Andreopoulos, Joeri Barbarien, Tom Clerckx, Fabio Verdicchio, Adrian Munteanu, Mihaela van der Schaar, Frederic Truchetet
2004 Wavelet Applications in Industrial Processing  
For this purpose, recent developments in video coding aim at providing a fully embedded bit-stream with seamless adaptation capabilities in bit-rate, frame-rate and resolution.  ...  A new promising technology in this context is wavelet-based video coding. Wavelets have already demonstrated their potential for quality and resolution scalability in still-image coding.  ...  for Scientific, Technical and Cultural Affairs (IAP Phase V -"Mobile Multimedia"), the Fund for Scientific Research -Flanders ("Reconfigurable Hardware for Embedded Systems" and "Design and Management  ... 
doi:10.1117/12.516177 fatcat:mvoegdh3dnc4jdm5qxkbcjwqua

Transmission of 3D Video over Network using Perceptual Video Coding

Nosheen Munir, Muhammad Majid, Habib Ullah
2017 International Journal of Computer Applications  
Scalable and reliable transmission of 3D video to end user through heterogeneous network is a challenging task.  ...  In this research the problem of scalable and reliable transmission of 3D video over network is addressed.  ...  Spatial scalability: This type of scalability is achieved by encoding a video with different layers and each layer is being responsible for improving the resolution of video.  ... 
doi:10.5120/ijca2017915004 fatcat:5347ptslt5bofmksmzl35uwdvm
« Previous Showing results 1 — 15 out of 4,229 results