On the minimization of glass-to-glass and glass-to-algorithm delay in video communication

Christoph Bachhuber, Eckehard Steinbach, Martin Freundl, Martin Reisslein

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Video cameras are increasingly used to provide real-time feedback in automatic control systems, such as autonomous driving and robotics systems. For such highly dynamic applications, the glass-to-glass (G2G) and glass-to-algorithm (G2A) latencies are critical. In this paper, we analyze the latencies in a point-to-point video transmission system and propose novel frame skipping and preemption approaches to reduce the G2G and G2A delays. We implement the proposed approaches in a prototype that shows significantly reduced G2G and G2A latencies as well as reduced transmission bitrate requirements compared with traditional video transmission schemes. In our low-delay video communication prototype, a VGA resolution video is transmitted with averageG2Gand G2A delays of 21.2 and 11.5 ms, respectively, with off-the-shelf hardware.

Original languageEnglish (US)
Pages (from-to)238-252
Number of pages15
JournalIEEE Transactions on Multimedia
Volume20
Issue number1
DOIs
StatePublished - Jan 2018

Keywords

  • Delay analysis
  • Delay measurement
  • Frame skipping
  • Preemption
  • Prototype system

ASJC Scopus subject areas

  • Signal Processing
  • Media Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering

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