Classroom Multimedia Integration for Advanced E-Presentations

We have developed several basic components for our virtualized classroom project: automated data collection, intelligent media integration, and flexible user interfaces. As an example of media integration, we show that when the PPT slides are projected onto the digital whiteboard where the instructor annotates, modifies, or expands the PPT presentation, geometrically registering high-resolution images from the two sources yields high quality digital presentations (e-presentations). We use a low-cost digital camera as a bridge to align the two sources and present a hybrid registration approach to align the PPT and handwriting images. Experimental results are presented to validate our approach

[1]  Wen Xu,et al.  CGT: A fast thinning algorithm implemented on a sequential computer , 1987, IEEE Transactions on Systems, Man, and Cybernetics.

[2]  R. Dannenberg,et al.  Are Just-InTime Lectures Effective At Teaching ? , 1997 .

[3]  Rahul Sukthankar,et al.  Scalable alignment of large-format multi-projector displays using camera homography trees , 2002, IEEE Visualization, 2002. VIS 2002..

[4]  Zhengyou Zhang,et al.  A Flexible New Technique for Camera Calibration , 2000, IEEE Trans. Pattern Anal. Mach. Intell..

[5]  Gregory D. Abowd,et al.  Classroom 2000: An Experiment with the Instrumentation of a Living Educational Environment , 1999, IBM Syst. J..

[6]  Brian Christopher Smith,et al.  Passive capture and structuring of lectures , 1999, MULTIMEDIA '99.

[7]  Zhigang Zhu,et al.  Virtualized Classroom - Automated Production, Media Integration and User-Customized Presentation , 2004, 2004 Conference on Computer Vision and Pattern Recognition Workshop.

[8]  Paul A. Beardsley,et al.  A self-correcting projector , 2001, Proceedings of the 2001 IEEE Computer Society Conference on Computer Vision and Pattern Recognition. CVPR 2001.

[9]  Rahul Sukthankar,et al.  Smarter Presentations: Exploiting Homography in Camera-Projector Systems , 2001, ICCV.

[10]  J. Padhye,et al.  MANI: Multimiedia Asynchronous Networked Individualized Courseware , 1996 .