The Experts below are selected from a list of 1866 Experts worldwide ranked by ideXlab platform
Jordi Ribascorbera - One of the best experts on this subject based on the ideXlab platform.
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Windows Media Video 9 overview and applications
Signal Processing-image Communication, 2004Co-Authors: Sridhar Srinivasan, Pohsiang Hsu, Tom Holcomb, Kunal Mukerjee, Shankar Regunathan, Bruce Lin, Jie Liang, Mingchieh Lee, Jordi RibascorberaAbstract:Abstract Microsoft ® Windows Media 9 Series is a set of technologies that enables rich digital Media experiences across many types of networks and devices. These technologies are widely used in the industry for Media delivery over the internet and other Media, and are also applied to broadcast, high definition DVDs, and digital projection in theaters. At the core of these technologies is a state-of-the-art Video codec called Windows Media Video 9 (WMV-9), which provides highly competitive Video quality for reasonable computational complexity. WMV-9 is currently under standardization by the Society of Motion Picture and Television Engineers (SMPTE) and the spec is at the CD (Committee Draft) stage. This paper includes a brief introduction to Windows Media technologies and their applications, with a focus on the compression algorithms used in WMV-9. We present analysis, experimental results, and independent studies that demonstrate quality benefits of WMV-9 over a variety of codecs, including optimized implementations of MPEG-2, MPEG-4, and H.264/AVC. We also discuss the complexity advantages of WMV-9 over H.264/AVC.
Yoshitaka Shibata - One of the best experts on this subject based on the ideXlab platform.
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MidField system: configuration of Media processing modules for multipoint communication
World Review of Science Technology and Sustainable Development, 2010Co-Authors: Koji Hashimoto, Yoshitaka ShibataAbstract:The authors have designed and implemented a middleware system for multipoint audio-Video communication on interconnected computer networks, which supports various audio-Video stream formats. This paper illustrates the configurations of streaming modules for multipoint communication in the authors proposal of the MidField system. The MidField system has many useful functions for actual multipoint audio-Video communication sessions according to end users' communication environment. The system is based on mobile agent technique and able to use Windows Media Video (WMV), digital Video (DV) and high-definition Video (HDV) on multipoint communication session.
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ICDCS Workshops - Implementation and Performance Evaluation of a New Teleconference System by GigaEther Based Omni-directional Video Cameras
2009 29th IEEE International Conference on Distributed Computing Systems Workshops, 2009Co-Authors: Hirokazu Ookuzu, Yoshitaka ShibataAbstract:In this paper, a new teleconference system by using Gigabit Ethernet based omni-directional camera system and flexible middleware system in realtime and bi-directional Video transmission is introduced. The omni-directional image has more advantages than conventional one-directional camera in that it provides a wider view than a single directional camera and able to realize flexible teleconferencing even between remotely separated small rooms. System architecture and functions of the middleware for high-definition omni-directional Video control and effective Video transmission system using Windows Media Video(WMV) format [4] are precisely described. QoS control function is also introduced to dynamically control the frame rate of Video depending on the changes of network and CPU load. The prototype system of a teleconference is constructed to apply for remote healthcare education and evaluate the performance of our suggested high-definition omni-directional Video system. Through the performance evaluation of the prototyped system, we could verify the usefulness of our proposed system.
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AINA Workshops - A New Teleconference System for Healthcare Applications by GigaEther-based Omni-directional Video Transmission
2009 International Conference on Advanced Information Networking and Applications Workshops, 2009Co-Authors: Hirokazu Ookuzu, Koji Hashimoto, Yosuke Sato, Yoshitaka ShibataAbstract:In this paper, a new teleconference system by using Gigabit Ethernet based omni-directional camera system and flexible middleware system in realtime and bi-directional Video transmission is introduced. The omni-directional image has more advantages than conventional one-directional camera in that it provides a wider view than a single directional camera and able to realize flexible teleconferencing even between remotely separated small rooms. System architecture and functions of the middleware for high-definition omni-directional Video control and effective Video transmission system using Windows Media Video(WMV) format [4] are precisely described. QoS control function is also introduced to dynamically control the frame rate of Video depending on the changes of network and CPU load. The prototype system of a teleconference is constructed to apply for remote healthcare education and evaluate the performance of our suggested high-definition omni-directional Video system. Through the performance evaluation of the prototyped system, we could verify the usefulness of our proposed system.
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AINA Workshops - Design and Implementation of Adaptive Streaming Modules for Multipoint Video Communication
22nd International Conference on Advanced Information Networking and Applications - Workshops (aina workshops 2008), 2008Co-Authors: Koji Hashimoto, Yoshitaka ShibataAbstract:We've developed a middleware system for multipoint Video communication on interconnected computer networks, which is able to use several audio Video formats and transcode formats as necessary. The system is based on mobile agent technique and able to support multipoint Video communication event with consideration of users' communication environments. In this paper, we describe design and implementation of adaptive streaming modules for multipoint Video communication in our middleware system. By using the streaming modules in the middleware, it is able to use functions for processing WMV (Windows Media Video), DV (Digital Video) and HDV (High Definition Video) on multipoint Video communication.
A. Weeks - One of the best experts on this subject based on the ideXlab platform.
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objective quality analysis of mpeg 1 mpeg 2 Windows Media Video
Southwest Symposium on Image Analysis and Interpretation, 2004Co-Authors: P.k. Aeluri, V. Bojan, S. Richie, A. WeeksAbstract:Video quality estimation methods in the literature can be broadly classified into two classes: objective and subjective. The metrics obtained from both classes of methods represent different intrinsic features of a Video (Eude, T. and Mayache, A., Proc. ICSP'98, 1998). However, we have performed an objective quality evaluation on various Videos, which range from no motion to high motion, encoded by three encoders (MPEG-1, MPEG-2 and Windows Media formats) at two different frame rates, two frame sizes and three low bit rate combinations for the purpose of determining the change in Video content introduced by the encoding and decoding process. The effect of the encoding, bit rates, frame rates and frame sizes on the quality of Videos has been studied. We have defined and used a quality metric, cumulative brightness error. It is the cumulative mean square error of each frame's color components, averaged for the entire Video sequence. It enables comparison of Video formats based on content differences and encoding parameter values.
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Objective quality analysis of MPEG-1, MPEG-2 & Windows Media Video
6th IEEE Southwest Symposium on Image Analysis and Interpretation 2004., 1Co-Authors: P.k. Aeluri, V. Bojan, S. Richie, A. WeeksAbstract:Video quality estimation methods in the literature can be broadly classified into two classes: objective and subjective. The metrics obtained from both classes of methods represent different intrinsic features of a Video (Eude, T. and Mayache, A., Proc. ICSP'98, 1998). However, we have performed an objective quality evaluation on various Videos, which range from no motion to high motion, encoded by three encoders (MPEG-1, MPEG-2 and Windows Media formats) at two different frame rates, two frame sizes and three low bit rate combinations for the purpose of determining the change in Video content introduced by the encoding and decoding process. The effect of the encoding, bit rates, frame rates and frame sizes on the quality of Videos has been studied. We have defined and used a quality metric, cumulative brightness error. It is the cumulative mean square error of each frame's color components, averaged for the entire Video sequence. It enables comparison of Video formats based on content differences and encoding parameter values.
Shankar Regunathan - One of the best experts on this subject based on the ideXlab platform.
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Quality and compression : The proposed SMPTE Video compression standard VC-1
SMPTE Motion Imaging Journal, 2005Co-Authors: Shankar Regunathan, Ann Marie Rohaly, Regis J. Crinon, Patrick GriffisAbstract:As PCs and other digital devices play an increased role in manipulating, delivering, and managing digital Video, in both home and professional broadcast environments, the distinction between consumer electronics and computers begins to blur. Consumers want to use their PCs to easily enjoy, manage, and share digital Media across different devices, from cable set-top boxes to DVD players to laptops and television sets. Home networks are becoming increasingly Media-savvy, facilitating movement of digital content to/from the living room and den. Broadcasters and content publishers want to deliver the experience that consumers demand and must compress the content-be it standard-definition or high-definition Video-for digital broadcast, disk, or download, with as little signal loss and degradation as possible. Overall, there is an increasing need for higher quality Video and audio at lower and lower bit rates for an increasing range of devices and applications. This paper will describe the underlying technology and concepts embodied in VC-1, the proposed SMPTE standard based on the Windows Media Video 9 advanced Video codec.
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Windows Media Video 9 overview and applications
Signal Processing-image Communication, 2004Co-Authors: Sridhar Srinivasan, Pohsiang Hsu, Tom Holcomb, Kunal Mukerjee, Shankar Regunathan, Bruce Lin, Jie Liang, Mingchieh Lee, Jordi RibascorberaAbstract:Abstract Microsoft ® Windows Media 9 Series is a set of technologies that enables rich digital Media experiences across many types of networks and devices. These technologies are widely used in the industry for Media delivery over the internet and other Media, and are also applied to broadcast, high definition DVDs, and digital projection in theaters. At the core of these technologies is a state-of-the-art Video codec called Windows Media Video 9 (WMV-9), which provides highly competitive Video quality for reasonable computational complexity. WMV-9 is currently under standardization by the Society of Motion Picture and Television Engineers (SMPTE) and the spec is at the CD (Committee Draft) stage. This paper includes a brief introduction to Windows Media technologies and their applications, with a focus on the compression algorithms used in WMV-9. We present analysis, experimental results, and independent studies that demonstrate quality benefits of WMV-9 over a variety of codecs, including optimized implementations of MPEG-2, MPEG-4, and H.264/AVC. We also discuss the complexity advantages of WMV-9 over H.264/AVC.
Sridhar Srinivasan - One of the best experts on this subject based on the ideXlab platform.
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Windows Media Video 9 overview and applications
Signal Processing-image Communication, 2004Co-Authors: Sridhar Srinivasan, Pohsiang Hsu, Tom Holcomb, Kunal Mukerjee, Shankar Regunathan, Bruce Lin, Jie Liang, Mingchieh Lee, Jordi RibascorberaAbstract:Abstract Microsoft ® Windows Media 9 Series is a set of technologies that enables rich digital Media experiences across many types of networks and devices. These technologies are widely used in the industry for Media delivery over the internet and other Media, and are also applied to broadcast, high definition DVDs, and digital projection in theaters. At the core of these technologies is a state-of-the-art Video codec called Windows Media Video 9 (WMV-9), which provides highly competitive Video quality for reasonable computational complexity. WMV-9 is currently under standardization by the Society of Motion Picture and Television Engineers (SMPTE) and the spec is at the CD (Committee Draft) stage. This paper includes a brief introduction to Windows Media technologies and their applications, with a focus on the compression algorithms used in WMV-9. We present analysis, experimental results, and independent studies that demonstrate quality benefits of WMV-9 over a variety of codecs, including optimized implementations of MPEG-2, MPEG-4, and H.264/AVC. We also discuss the complexity advantages of WMV-9 over H.264/AVC.
