Department of Telematics
Leif Arne Rønningen, PhD
professor - networked multimedia systems, system development
tel: +47 7359 2665
mobil: +47 9003 0473
Multimedia Lab: Caruso, room A264/A268
Project students, 3-8 each autumn
Master thesis students, 3-8 each spring
PhD students, 2-3 continuously
Leif Arne Rønningen graduated as MSc in 1976 and PhD in 1982, from the Dep.
of telematics, NTNU. He has more than 20 years of experience from research,
development, project management, marketing, general- and top management and
teaching. Positions held are as diving instructor, project manager, marketing-,
research-, managing- and technical director, steering-board member, and
chairman of the board. The research carried out is referenced below. From
1995-99 he was engaged by Telenor as a consultant, and was involved in the
introduction of digital TV and specification work on future digital TV in
Leif Arne Rønningen is a member of the opera company TrønderOperaen, one of
the partners in Musikkteatret i
Examples of acting in opera choir: Bajazzo by Leoncavallo, Carmina Burana by Orff, Orpheus in the underworld by Offenbach, Thora paa Rimol by Borgstrøm, Rigoletto by Verdi (cooperation between TrønderOperaen and DNO, Olavshallen), The magic flute, Motzart, and Cavalleria Rusticana. Examples of acting in TrønderOperaen soloist groups: baritone parts from Cosi fan tutte, The magic fluite and other Mozart operas. Participation in classical church concerts and church music plays in the Nidaros Cathedral over many years as member of the cathedral choirs. CD recordings with opera choir: Heimferd by Irgens-Jenssen, and Thora fra Rimol by Borgstrøm. Participation in several radio and TV productions. He is presently a member and board member of Trondheim Vocal Ensemble.
From 2003-2006 he was a board member of TEKS, Trondheim Elektroniske KunstSenter (center of electronic arts). He is also been a board member of the company VisualKnowledge, and is presently a board member of Stiftelsen Thora and the company CUPP Computing, and a member of the Research Committee at the IME faculty, NTNU.
Present research areas:
· Distributed Multimedia Plays (DMP)
· Quality Shaping - Adaptive Scene Resolution & Traffic Control in IP nets
· Object oriented scenes & services
· Autostereo multiview video, segmentation, fovation, presentation, object tracking.
· Embedded system design
· Application of DMP in arts (opera, musical plays, dance, concerts, etc)
The main features of DMP can be summarized as follows:
'The Distributed Multimedia Plays Systems Architecture (DMP) provides 3D multiview video and 3D sound collaboration between performers over packet networks. To guarantee the end-to-end time delay less than 10-20 milliseconds, and obtain high network resource utilization, the perceived quality of audio-visual content is allowed to vary with the traffic in the network. Parameters that are included in the quality concept, and that can be controlled adaptively, are the end-to-end delay, the number of 3D scene sub-objects and their temporal and spatial resolution, adaptive and scalable compression of sub-scenes, and the number of views. To approach the natural level of human perception, the quality has to be increased to levels that temporarily require data rates of Giga bits per second between users. An integrated resolution and traffic control algorithm denoted the Quality Shaping algorithm, using traffic classes, measurement and forecasting of traffic, feedback control and traffic shaping (packet drop and source scaling), provides the necessary control. Actual DMP applications from arts are jazz sessions, song lessons, and distributed opera. Other applications are in coming generations TV (MHP extended with DMP), games, education, and near natural-seeing virtual meetings.'.
A large number of presentations (> 300) has been carried out (conferences, scientific periodicals, newspapers, radio, TV, marketing).
More than 100 scientific papers and reports. Several works have combined psychological, sociological, pedagogical and technical approach.
A large number of development-, economic-, marketing- and management reports and plans.
Some selected publications before 2000:
'Analyses of a traffic shaping scheme'. Paper presented at the 10th
International Teletraffic Congress,
et realistisk alternativ?' Article by LAR in the book 'Det data-assisterte samfunn', Norsk
voksenpedagogisk institutt 1988 (red. W Rønning, R Ingvaldsen), and
'Teknologisk grunnlag for fremtidens fjernundervisning'. Paper presented by LAR
at the conference 'Det data-assisterte samfunn', Trondheim 1989. Part of the
proceedings 'Teknologi og tilpasning' Norsk voksenpedagogisk institutt 1989
'Development and marketing of integrated circuits for MAC TV'. Nordic VLSI 11oct1989, and 'A multi Conditional Access MAC Receiver Architecture'. Nordic VLSI, June1989. Architecture and HW/SW co-design of a MAC TV decoder and chipset. Specification of access control system for pay-TV, Eurocrypt S
'Architecture of a Very Fast Packet Switch'. Paper presented at the
XI International Switching Symposium,
'Custom integrated circuits for GSM mobile stations'. Nordic VLSI 3jan91. Based on the GSM specifications, architectures for two generations ASICs for the mobile unit were proposed. SW/HW Co-design was carried out.
'The Combined Digital Satellite Broadcast and Internet System'. Telenor Satellite Services, 7feb99. A network architecture combining satellite broadcasting and Internet, in order to support DVB 'Enhanced broadcast', 'interactive TV' and 'Internet access' was proposed and analyzed. The concepts of 'layer-structured multimedia applications' and 'distributed multimedia plays' were introduced. Adaptive algorithms and architectures for adaptive use of caches and carousels for Web and TV objects were described.
'Optimization of Multimedia Home Network Architecture'. Telenor Satellite Services, 28feb99. About iterated design methodology, generalized object oriented processing structures, home network architectures, unified user interface/service control, how to speed up Java, HDTV MPEG-2 Picture-in-Picture decoder, hardware/Java co-design of protocols, security strategy, personal mobile IPv6 addressing in satellite networks.