Automatic lecture recording

ABSTRACT

We present our system for automatic lecture recording. In contrast to traditional lecture recording systems our approach aims to imitate a real camera team, consisting of multiple cameramen and a director, in order to make the recording more vivid. At first, we introduce the environment. Then, we present our approach, beginning with the director module, followed by the cameraman module and the sensor tools module, referring to the jobs of the respective human originals. The director is based on an Extended Finite State Machine, with transition conditions depending on input from sensor tools. The cameraman automatically controls iris, focus, etc., and also takes basic cinematographic rules into account. The video concludes with an example result of our virtual camera team of a real lecture. A video demo of our approach is available at [4].

REFERENCES

• 1: Bianchi, M. H. AutoAuditorium: A fully automatic, multicamera system to televise auditorium presentations, Proceedings of the Joint DARPA/NIST workshop on smart spaces technology, Gaithersburg, MD, USA, 30--31 July 1998.
• 2: Ross Cutler , Yong Rui , Anoop Gupta , JJ Cadiz , Ivan Tashev , Li-wei He , Alex Colburn , Zhengyou Zhang , Zicheng Liu , Steve Silverberg, Distributed meetings: a meeting capture and broadcasting system, Proceedings of the tenth ACM international conference on Multimedia, December 01-06, 2002, Juan-les-Pins, France [doi>10.1145/641007.641112]
• 3: Thomas King , Thomas Haenselmann , Stephan Kopf , Wolfgang Effelsberg, Overhearing the Wireless Interface for 802.11-Based Positioning Systems, Proceedings of the Fifth IEEE International Conference on Pervasive Computing and Communications, p.145-150, March 19-23, 2007 [doi>10.1109/PERCOM.2007.25]
• 4: Lampi, F. Automatic Lecture Recording Homepage, http://www.AutomaticLectureRecording.de, last visited: 06/02/2008.
• 5: Yong Rui , Anoop Gupta , J. J. Cadiz, Viewing meeting captured by an omni-directional camera, Proceedings of the SIGCHI conference on Human factors in computing systems, p.450-457, March 2001, Seattle, Washington, United States [doi>10.1145/365024.365311]
• 6: Rui, Y., Gupta, A., Grudin, J., He, L. Automating lecture capture and broadcast: Technology and videography. ACM Multimedia Systems Journal Vol.10, No.1, 2004, 3--15.
• 7: Scheele, N., Seitz, C., Effelsberg, W., Wessels, A. Mobile devices in Interactive Lectures, Proceedings of the World Conference on Educational Multimedia, Hypermedia & Telecommunications (ED-MEDIA 04), 2004. Lugano, Switzerland, 154--161.
• 8: Cha Zhang , Jim Crawford , Yong Rui , Li-wei He, An automated end-to-end lecture capturing and broadcasting system, Proceedings of the 13th annual ACM international conference on Multimedia, November 06-11, 2005, Hilton, Singapore [doi>10.1145/1101149.1101326]

INDEX TERMS

Primary Classification:
  K. Computing Milieux
  K.3 COMPUTERS AND EDUCATION
      K.3.1 Computer Uses in Education
          Subjects: Distance learning

General Terms:
Algorithms, Design, Documentation

Keywords:
automation, camera-team, educational multimedia application, lecture recording, lecture transmission, video production rules