Publication

MPEG-4 for networked collaborative virtual environments

Daniel Thalmann, Nadia Magnenat-Thalmann
1997
Conference Papers

Abstract

MPEG is traditionally committed to the coding and compression of audio-visual data from natural sources. However, the emerging MPEG-4 standard aims not only at encoding the multiple natural audio-visual objects composing the scene, but also synthetic audio and video to be integrated with the natural objects. It also allows more interaction with both synthetic and natural objects. Networked collaborative virtual environments (NCVEs) have a wide range of different networking requirements. This paper analyzes how these requirements could potentially be met by MPEG-4 and shows that MPEG-4 tools could be extremely useful for the development of such environments

Official source

https://infoscience.epfl.ch/entities/publication/8713d30c-70f6-476a-8c9c-d5c79d8853cd

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Daniel Thalmann, Nadia Magnenat-Thalmann
1997
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/8713d30c-70f6-476a-8c9c-d5c79d8853cd

About this result

Related concepts (26)

Advanced Audio Coding

Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves higher sound quality than MP3 encoders at the same bit rate. AAC has been standardized by ISO and IEC as part of the MPEG-2 and MPEG-4 specifications. Part of AAC, HE-AAC ("AAC+"), is part of MPEG-4 Audio and is adopted into digital radio standards DAB+ and Digital Radio Mondiale, and mobile television standards DVB-H and ATSC-M/H.

MPEG-4

MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related technology agreed upon by the ISO/IEC Moving Picture Experts Group (MPEG) (ISO/IEC JTC 1/SC29/WG11) under the formal standard ISO/IEC 14496 – Coding of audio-visual objects. Uses of MPEG-4 include compression of audiovisual data for Internet video and CD distribution, voice (telephone, videophone) and broadcast television applications.

Data compression

In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information.