| dc.description.abstract | Teaching in a classroom is a routine work for the teacher who provides education for the students. Emerging of computers and technologies for education enhance teaching experience and facilitate teacher to use varies teaching media such as video, audio, slide presentation, computer and internet.
However, speaking in public may be a challenging task in terms of self-control and at-tention to the concept to expose and to non-verbal communication. The presentation software, like Microsoft PowerPoint or OpenOffice, may support the speaker in organizing and control-ling the flow of his/her discussion by commanding slide change. Nevertheless, traditional keyboard and mouse based presentation prevent speakers from freely and closely interacting with the audiences, because the speaker continuously has to go to the computer to manage the presentation. Even nowadays, most of this problem has been overcome by the presence wire-less control but also these devices have some drawbacks. Indeed, these kind of device just can support some controlling of the presentation not cover all of functions that teachers or pre-senters need such as play a video on the slide, switching slide show, shows the webpage of reference links from slide, recording a video for making learning material.
In this study proposed a gesture-based presentation system in the classroom, in particular provide a functionality presentation tools to facilitate teachers interact with a presentation software. The system is designed to use a Kinect sensor for input device by capture a teacher’s gesture and create a new set of gesture commands for managing a presentation.
For the experiment, the system was tested by the volunteers from MINElab, department of computer science and information engineering at National Central University, Taiwan R.O.C. The assessment is based on the combined usage of three techniques: a questionnaire-based survey which aims to measure a user satisfaction, also when compare the functionality with other existing systems, and testing the system performance in term of the command ac-curacy.
The result of the questionnaire indicates that for a general opinion of the user were satis-fied of the overall usability of this system. The participants agree about functions and the ease of use of the presentation application. The result of comparing the system with others its shown the system has more functions and may cover all functions that teachers or presenters need during a presentation. The implication of system performance result is the set of com-mand is easy to use and hardly lacking of the command. The commands are appropriate and cover the teachers’ needs during the presentation. | zh_TW |