Publication

Perceptual Quality Metric as a Performance Tool for ATM Adaptation of MPEG-2 Based Multimedia Applications

1996
Conference Papers

Abstract

In this paper we study the perceptual impact of data loss on MPEG-2 video coded streams transmitted over an ATM network. This impact is measured using a perceptual quality metric based on a spatio-temporal model of the human visual system. Video streams have been transmitted on top of both new network and ATM adaptation layers which provide a robust transmission by applying per-cell sequence numbering combined with a selective Forward Error Correction (FEC) mechanism. We compare their performance against a transmission over AAL5. Results show that the proposed AAL behaves better in terms of both network performance and perceived quality of the MPEG-2 decoded sequence

Official source

https://infoscience.epfl.ch/entities/publication/84ad642c-6150-4ded-9bc0-d91c9dd460ed

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1996
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/84ad642c-6150-4ded-9bc0-d91c9dd460ed

About this result

Related concepts (32)

MPEG-2

MPEG-2 (a.k.a. H.222/H.262 as was defined by the ITU) is a standard for "the generic coding of moving pictures and associated audio information". It describes a combination of lossy video compression and lossy audio data compression methods, which permit storage and transmission of movies using currently available storage media and transmission bandwidth. While MPEG-2 is not as efficient as newer standards such as H.264/AVC and H.

MPEG-1

MPEG-1 is a standard for lossy compression of video and audio. It is designed to compress VHS-quality raw digital video and CD audio down to about 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) practical. Today, MPEG-1 has become the most widely compatible lossy audio/video format in the world, and is used in a large number of products and technologies.

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.

Related publications (4)

Perceptual Quality Metric as a Performance Tool for ATM Adaptation of MPEG-2 Based Multimedia Applications

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Extrastriate activity reflects sensorimotor-induced bias in estimating number of visual humans

New Network and ATM Adaptation Layers for Interactive MPEG-2 Video Communications: A Performance Study Based on Psychophysics

A Flexible Rate Control Mechanism for Interactive MPEG-2 Video Services over ATM Networks