Abstract
Most distance learning or teaching systems use just regular television equipment, so the receiver is limited to passively watching the incoming low-resolution video stream. We have created a high-resolution image transfer system that creates a virtual copy of the sender’s environment, captured by multiple high-resolution still cameras, within the receiver’s computer. The receiver can peruse the virtual copy and zoom in to read what the lecturer has written on the board whenever desired. This paper shows how to reduce the transmission bandwidth required; the system periodically updates the images held in the receiver’s computer when necessary by sending only the images in which a significant change is detected and that show the lecturer’s most recent position. A simple method of detecting the lecturer’s position accurately is introduced and we discuss the impact of sound localization on service acceptance.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
D. Zotkin et al., “An audio-video front-end for multimedia applications,” Proceedings of IEEE International Conference on Systems. Man and Cybernetics 2000, vol.2, pp.786–791, 2000.
S Sabri, “Video Conferencing Systems”, Proceedings of the IEEE, vol.73, no.4, pp.671–688, Apr.1985.
D. K. Norman et. al., “Behavioral and User Needs for Teleconferencing”, vol.73, no.4, pp. 688–699, Apr.1985.
K. Tanaka et al.,“Study of Efficient Data Transmission Technique on Teleconference System”, Proceedings of the 1999 engineering sciences society conference of IEICE, D-15-2, pp.226 Sep.1999.
Liyuan Li and Maylor K. H. Leung,“Integrating Intensity and Texture differences for Robust Change Detection”,IEEE Trans. Image Processing, Vol.11, No.2,P.105,2002
H. Yago et al., “High Resolution Partial Images Distribution System for Distance Learning via High Speed Networks”, to be published in the proceedings of ICITA 2002.
K. Kusuba et al.,“Construction of High Resolution Partial Images Distribution System on High Speed Networks”, Technical report of IEICE, Vol.100 No.102 IE2000-11, pp.15–20, May 2000.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Yago, H., Takano, T., Terada, K., Tokura, N. (2002). Lecturer Position Detection for Distribution System Using High Resolution Partial Images. In: Chen, YC., Chang, LW., Hsu, CT. (eds) Advances in Multimedia Information Processing — PCM 2002. PCM 2002. Lecture Notes in Computer Science, vol 2532. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36228-2_70
Download citation
DOI: https://doi.org/10.1007/3-540-36228-2_70
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-00262-8
Online ISBN: 978-3-540-36228-9
eBook Packages: Springer Book Archive