MPEG-4 video and its potential for future multimedia services

Sikora, Thomas; Chiariglione, Leonardo

doi:10.1109/iscas.1997.622195

Cited by 15 publications

(7 citation statements)

References 4 publications

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“…One of the methods is to provide a verbal description of the phenomenon, e.g., 'eyes shut and mouth a little bit open'. Another would be to give some quantitative description in terms of geometrical changes of the face, e.g., MPEG-4 standard [24,25].…”

Section: Facial Action Coding Systemmentioning

confidence: 99%

Parametric Generation of Facial Expressions Based on FACS

Wojdel

Rothkrantz

2005

Computer Graphics Forum

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This paper presents a parametric performance-based model for facial animation that was inspired by Facial Action Coding System (FACS) developed by P. Ekman and F. W. Friesen. The FACS consists of 44 Action Units (AUs) corresponding to visual changes on the face. Additionally, predefined co-occurrence rules describe how different AUs influence each other. In our model, each facial animation parameter corresponds to one of the AUs as defined in FACS. Implementation of the model is completed with methods for accumulating displacement from separate AUs together, and fuzzy-logical adaptation of co-occurrence rules from the FACS. We also describe the method for adapting our model to a specific person.

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Section: Facial Action Coding Systemmentioning

confidence: 99%

Parametric Generation of Facial Expressions Based on FACS

Wojdel

Rothkrantz

2005

Computer Graphics Forum

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“…Therefore, we use the DCT-based MPEG-4 video tools for coding the base layer. There are many excellent documents and papers describe the MPEG-4 video coding tools [17,18,43,44].…”

Section: Mpeg-4 Video Based Xne-granular-scalability (Fgs)mentioning

confidence: 99%

Scalable Internet video using MPEG-4

Radha

Chen

Parthasarathy

et al. 1999

Signal Processing: Image Communication

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Real-time streaming of audio-visual content over Internet Protocol (IP) based networks has enabled a wide range of multimedia applications. An Internet streaming solution has to provide real-time delivery and presentation of a continuous media content while compensating for the lack of Quality-of-Service (QoS) guarantees over the Internet. Due to the variation and unpredictability of bandwidth and other performance parameters (e.g. packet loss rate) over IP networks, in general, most of the proposed streaming solutions are based on some type of a data loss handling method and a layered video coding scheme. In this paper, we describe a real-time streaming solution suitable for non-delay-sensitive video applications such as video-on-demand and live TV viewing.The main aspects of our proposed streaming solution are:1. An MPEG-4 based scalable video coding method using both a prediction-based base layer and a "ne-granular enhancement layer;2. An integrated transport-decoder bu!er model with priority re-transmission for the recovery of lost packets, and continuous decoding and presentation of video. In addition to describing the above two aspects of our system, we also give an overview of a recent activity within MPEG-4 video on the development of a "ne-granular-scalability coding tool for streaming applications. Results for the performance of our scalable video coding scheme and the re-transmission mechanism are also presented. The latter results are based on actual testing conducted over Internet sessions used for streaming MPEG-4 video in realtime.Published by

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“…This paper focuses only on some major innovations of the MPEG4 video coder. The reader is directed to the wealth of information that is available on MPEG at the official MPEG web site http://www.cselt.it/mpeg and other recent MPEG4 publications [3,4,5,6,7,8].…”

Section: Mpeg4 Overviewmentioning

confidence: 99%

New Trends in Multimedia Standards: MPEG4 and JPEG2000

Liang¹

1999

InformingSciJ

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MPEG-4 video and its potential for future multimedia services

Cited by 15 publications

References 4 publications

Parametric Generation of Facial Expressions Based on FACS

Parametric Generation of Facial Expressions Based on FACS

Scalable Internet video using MPEG-4

New Trends in Multimedia Standards: MPEG4 and JPEG2000

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