Conference program

Conference “JPEG – continuity and innovation”


Venue: Leipzig University, Augustusplatz 10, Paulinum, Room P702
04109 Leipzig
October 07th, 2016


Download the German version as PDF for printout: konferenzplan_jpeg-jubilaeum

09:00 – 09:30: Welcoming of the participants, introductory remarks by Lars Göhler, moderator.

Session: JPEG – technical topics, programming, architecture, features

09:30 – 10:30:
presentation of Guido Vollbeding  and discussion: Digital Image Representation

Abstract: The four fundamental properties of image representation by usage of the DCT (Discrete Cosine Transform) are introduced. These properties are essential for understanding the success of this approach and the flop of other attempts which do not align to them. The JPEG process realizes these properties and thus ideally satisfies the basic requirements of an image coding standard. The basic structure of the JPEG process is shown and the individual processing steps are described. Advanced JPEG functions, which gradually find use in applications, are communicated, especially arithmetic coding, lossless compression, SmartScale and extended color representation. Prospects for future developments are given.

Guido VollbedingGuido Vollbeding is organizer of the Independent JPEG Group and developer of libjpeg

Short bio:

  • Study mathematics and information technology, focus on harmonic functions and cross-platform computer graphics
  • Work in several ventures on the field of image processing
  • Independent author and developer
  • Organizer of the “Independent JPEG Group” (since 2005), JPEG reference software


Session: JPEG – history: continuity and innovation

10:45 – 12:00:
presentation of István Sebestyén and discussion: History of JPEG Standardization

Abstract: The presentation is one in the series of “memorial” presentations about JPEG still image compression standardization. It highlights the right timing of JPEG and lists some reasons for its great success. Because of the 25 years jubilee of the IJG open source code release it concentrates on the early relation between the JPEG Standard and the IJG Open Source implementation, and reviews the impact of patents and SDO patent policies on the early JPEG standardization.

Dr. István SebestyénDr. István Sebestyén has been Secretary General of Ecma International in Geneva since 2007. Before joining Ecma he has been Director of Standards in Siemens, Munich for 21 years, mostly in the areas of telecommunication terminals and protocols, multimedia and enterprise networks. He has been doing standardization for more than 30 years in various SDO and Fora, like ITU, ISO, ETSI, DIN, IMTC, where he has hold several leading positions. He was one of the founding members of JPEG in 1986. He was – between 1987 and 2000 – on the CCITT (later ITU-T side) the Special Rapporteur responsible for the JPEG standardization. For over 20 years he has been also lecturing at the University of Klagenfurt in Austria and the Technical University of Graz.  Before that between 1978-1984 he has been Research Scholar at the International Institute for Applied Systems Analysis in Laxenburg, Austria and was involved in early international computer networking projects and many interdisciplinary ICT technology related studies.

12:00 – 13:00: Lunch Break

13:00 – 14:30: Workshop: Future of the JPEG standard and the Independent JPEG Group. Introductory presentation of Guido Vollbeding on new features of the JPEG format.

Session: JPEG – application in industry and software production

15:00 – 16:00:
presentation of Michael Stepping and discusssion: Use of the JPEG format at the Mobile Video Platform (Einsatz des JPEG Formates bei der Mobile Video Plattform)

German abstract: Die Mobile Video Plattform übertragt Live-Video-Streams in den Formaten H.264/AVC, H.265/HEVC, MP4 von überall auf das Handy und umgekehrt. Welche Rolle spielt dabei das JPEG, ein Stillbildformat? Das JPEG übernimmt die Rolle des formatunabhängigen und zeitunabhängigen Transfers von Bildern aus verschiedensten Quellen in sehr guter Qualität. Dies ist aber auch verbunden mit hohen Bitraten bei der Übertragung von vielen Einzelbildern in schneller Folge.

Sowohl IP-Überwachungskameras als auch Customer Plattformen liefern JPEGs, die sich in schneller Reihenfolge geliefert, dann in Videostreams gemäß dem aktuellen Stand der Technik überführen lassen. Damit können auch alte, installierte Kameras die neuen, aktuellen Videocodiertechniken beliefern, ohne dass Umrüstungen der Hardware notwendig werden.

Prof. Dr. Michael SteppingMichael Stepping is Professor for Mobile Software Development at the University of Applied Sciences Hof and CEO of avinotec GmbH (

German bio: Nach Studium der Elektrotechnik an der Universität Siegen arbeitete Michael Stepping im Bereich der Software-Entwicklung für die Automatisierungsindustrie und Telefonanlagen. 1997 wechselte Herr Stepping an die FernUniversität Hagen um dort bei der Arbeitsgruppe MPEG im Bereich Streaming und Videoverarbeitung mitzuarbeiten.
2004 wurde er mit dem Thema “Ein Beitrag zu MPEG-4 Broadcast” promoviert und gründete 2005 die avinotec GmbH, die sich mit Live-Video-Streaming von und zu mobilen Endgeräten befasst.
Mit der Beginn von App-Entwicklungen bekam er 2014 den Ruf an die Hochschule für Angewandte Wissenschaften in Hof ( Bayern ) und betreut dort das Lehrgebiet Mobile Software Development im Studiengang Mobile Computing.