Infoscience

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Conference paper

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

Verscheure, O.; Garcia, X.
  • Presented at: EUNICE Summer School
  • Published in: EUNICE Summer School
  • Publication date: 1996

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

Keywords: ATM Adaptation Layer ; Network Adaptation Layer ; Real-Time Multimedia Applications ; MPEG-2 ; Perceptual Quality Metric

Reference

  • LCA-CONF-1996-012

Record created on 2004-08-31, modified on 2011-07-15

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