Advancing Screencast Lectures: Summarization and Visual Navigation
Ernesto Rivera, Akinori Nishihara, Tokyo Institute of Technology, Bolivia
Global Learn, in Melbourne, Australia ISBN 978-1-880094-85-3 Publisher: Association for the Advancement of Computing in Education (AACE)
Screencast lectures have become a popular way to create learning material without the need of cameras, recording crews and other constraints imposed by traditional recorded lectures. While lecturers and institutions publish hundreds of screencasts, it can be a real challenge to navigate the contents of such videos as the captured screen context changes dramatically from one section to another making it very difficult to follow the lecturer, let along to find a given section. In their current state screencast lectures risk frustrating students thus potentially failing to reach their audience. In this work we present a fully automated summarization tool that robustly extracts the most relevant features of a screencast lecture and an innovative mobile iPad visualization tool. Both tools combined together offer learners a novel way to discover and revisit lectures by offering general overview and intuitive visual timelines for a new level of flexibility at no extra cost.
Rivera, E. & Nishihara, A. (2011). Advancing Screencast Lectures: Summarization and Visual Navigation. In S. Barton, J. Hedberg & K. Suzuki (Eds.), Proceedings of Global Learn Asia Pacific 2011--Global Conference on Learning and Technology (pp. 223-229). Melbourne, Australia: Association for the Advancement of Computing in Education (AACE).
© 2011 Association for the Advancement of Computing in Education (AACE)