High-Quality and Small-Capacity Lecture-Video-File Creating System for Chalk-and-Talk Based Lectures
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Sakamoto, R., Nomura, Y. & Kato, N. (2006). High-Quality and Small-Capacity Lecture-Video-File Creating System for Chalk-and-Talk Based Lectures. In T. Reeves & S. Yamashita (Eds.), Proceedings of World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education 2006 (pp. 3004-3008). Chesapeake, VA: AACE.
Retrieved from http://www.editlib.org/p/24161.
World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (ELEARN) 2006
Honolulu, Hawaii, USA
Thomas Reeves & Shirley Yamashita
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Table of Contents
The authors proposed a high-quality and small-capacity lecture-video-file creating system for traditional chalk-and-talk based lectures: it will be used for distance e-learning. Examining the features of the lecturing scene, the authors ingeniously employ two kinds of image-capturing equipment having complementary characteristics: one is a digital video camera with a low resolution and a high frame rate, and the other is a digital still camera with a high resolution and a very low frame rate. By integrating the two kinds of images with image processing, we can produce course materials with greatly reduced file capacity: the course materials satisfy the requirements both for the temporal resolution to see a lecturer's point-indicating actions and for the high spatial resolution to read small written letters. As a result of an experiment, an e-lecture using the proposed file creating system was confirmed to be effective for providing sufficiently legible lecture images at remote places.
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