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Development and Evaluation of Distance Education Using High-Definition Video Transmission with Reduced Camera Work

减少摄像工作的高清视频传输远程教育的开发与评估

基本信息

批准号：
17300263
负责人：
NISHIHARA Akinori
金额：
$ 10.21万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17300263/
关键词：
Distance Education High Definition Video Camera Control

项目摘要

High-Definition (BD) video has wide view and high resolution, and it can suitably used in distance education. With HD video even without camera work, remote students can study as live students. The Center for Research and Development of Educational Technology, Tokyo Institute of Technology transmits many lectures to domestic high schools and foreign universities. Actual distance lectures shot by expert cameramen using Standard-Definition (SD) video are also taken by HD video without any camera work. Those videos are viewed by subjects and we conducted questionnaire survey and eye tracking.The main results are;1. Expert cameramen properly shoot areas where students mainly see, but we demonstrated quantitatively that students tend to see outside of those areas. So it is practically impossible to satisfy all the students.2. Teaching Assistants cannot control a camera, but even without any camera work HD video can show wide area with enough resolution. So it can suitably used as distance education media.These results show that proper educational environment can be set up by preparing wide band network to transmit HD video with reduced labor cost for expert cameramen. In those cases, however, big screen should be prepared not to make characters on the board too small.

高清视频具有宽视角、高分辨率的特点，适合于远程教育。通过高清视频，即使没有摄像头，远程学生也可以像现场学生一样学习。东京工业大学教育技术研究开发中心向国内高中和外国大学传输了许多讲座。由专业摄像师使用标准清晰度（SD）视频拍摄的实际距离讲座也由高清视频拍摄，无需任何摄像工作。通过问卷调查和眼动追踪的方法对被试观看的视频进行了调查。专业摄影师正确地拍摄学生主要看到的区域，但我们定量地证明了学生倾向于看到这些区域之外的区域。所以要让所有的学生都满意实际上是不可能的.教学助理不能控制摄像机，但即使没有任何摄像机工作高清视频可以显示足够的分辨率宽的区域。这些结果表明，通过准备宽带网络传输高清视频，可以为专业摄影师减少人力成本，建立适当的教育环境。然而，在这些情况下，大屏幕应该准备好不要让板上的字符太小。