An Image Source Checker for Educational Presentation Materials

Abstract

In this research, we propose a web-based system to check source URLs of image contained in a presentation material. In higher education, presentation slides are widely used as educational materials in class. These materials are often uploaded to a Learning Management System (LMS) in order to provide them to class students. To make their presentation more impressive, images downloaded from the Internet may be used in the presentation. Under the copyright law of Japan, it is not permitted to upload these materials to a web server, i.e., to LMS without permission of the copyright owner of the image. It would be helpful for a center managing the LMS to have a web based system which can check the presentation materials and show some advice to avoid copyright issues. The proposed system extracts all the images contained in the presentation file uploaded to the system and displays several source URL candidates of the image if they are likely to have been obtained from the Internet. By checking the copyright notice or terms of use indicated on the page of the shown URL, the center can make appropriate advice to avoid copyright issues to the creator of the presentation slides.