Abstract
(Englisch)
|
During the last (third) year of the DVP project CUI participated in Work Packages 4.2 Distrib-uted video Editing and Retrieval and 4.3 Distributed Rehearsal. The work of the work packages was completed at the end of the 30th month, according to the project schedule, and the results were disseminated with presentations to conferences, papers and technical reports, and demon-strations to different exhibitions.
1. WP 4,2 Distributed Video Editing and Retrieval (DVER)
1.1. Overview of WP 4.2
Within the DVP project (European Union ACTS A089), the goal of the Distributed Video Editing, Archival and Retrieval (DVER) application is to provide broadcasters with a complete solution for distributed video post-pro-duction. This system should combine together archival, retrieval, and editing functionalities in order to increase the accessibility and reuse of archive material. Moreover, the system should be geographically distributed, guaran-tee a high degree of portability to different platforms, and employ digital video using standard compression for-mats. All these objectives have been achieved, and a complete prototype has been integrated and put in operation by our end user (MegaChannel TV) for news post-production.
1.2. Work done by CUI
The CUI has played a major role in this application, by contributing to the assessment of the state of the art in the field, by participating to the functional specifications of the complete DVER system, by completing the technical specifications of the archival subsystem, and finally by implementing the archival subsystem.
2. WP 4.3 Distributed Rehearsal (DR)
2.1 Overview of WP 4.2
The target of the Distributed Rehearsal application was to develop a telepresence environment for the support of distributed rehearsals. These rehearsals can be theater rehearsals, musical rehearsals, etc. The aim of the distrib-uted rehearsal application was to allow the organization of rehearsals without requiring the participants (actors, musicians, conductors etc.) to be physically in the same room, eliminating thus the need to travel from one city to another for participating in the rehearsal. CUI was the leader of the Distributed Rehearsal application and was heading the conception, design, implementation and testing of the DR system.
2.3 Distributed Rehearsal Trials
From the several tests and trials performed the most characteristic ones were the two distributed musical rehearsals. Both trials were organized between GMD (Sankt Augustin) and the University of Geneva. The distributed musical rehearsal trials were organized in November 15th 1996 and May 30, 1997 with the ORAME EOC orchestra. The total duration each rehearsal was 6 hours. In the November 1996 rehearsal trial objective evaluation tests were per-formed while in the May 1997 rehearsal trial designation tests were organized.
November 1996 Distributed Musical Rehearsal
The piece retained for the first distributed musical rehearsal trial, 'Derives', was composed in 1984 by Pierre Boulez for six instruments: piano, vibraphone, violin, cello, flute and clarinet. The musicians where installed in Geneva while the conductor was in Germany. A dummy head was placed approximately where the conductor's head would be if he was physically present in the rehearsal.
The distributed musical rehearsal trial was organized into four phases. The first phase consisted of the tuning and equipment for the correct capture and reproduction of the sound. The second phase was dedicated in the quantitative quality control of the installation. The third phase was the main part of the trial where the orchestra rehearsed the retained musical piece. Finally in the fourth phase the musicians and the conductor were interviewed independently in order to obtain a subjective measurement of the distributed rehearsal environment.
2.5 Dissemination
The DR system was presented in different conferences (ICMC97, SAC98, ECMAST 98)and was demonstrated in different expositions, like Telecom 97 (CUI), CeBit 97 (GMD) etc.
The DR system has been installed over a private ATM line and links the Rector councils of the University of Geneva and the University of Lausanne. The system will be used for join meeting of the Rector councils in a first phase and for sharing courses in a second phase.
The DR system will be used as a basis for setting up a advanced teleconferencing system over the l55Mbps ATM line of the Swiss academic network, linking different research centers in Switzerland and in a second phase in Europe. The system is currently under design and we expect to have a first version by the end of 1998.
|
