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2006
IEEE

Automatic Capture of Significant Points in a Computer Based Presentation

11 years 9 months ago
Automatic Capture of Significant Points in a Computer Based Presentation
We describe an automatic classroom capture system that detects and records significant (stable) points in lectures by sampling and analyzing a sequence of screen capture frames from a PC used for presentations, application demonstrations, etc. The system uses visual inspection techniques to scan the screen capture stream to identify points to store. Unlike systems that only detect and store slide presentation transitions, this system detects and stores significant frames in any style of lecture using any program. The system is transparent to the lecturer and requires no software or training. It has been tested extensively on lectures with multiple applications and pen-based annotations and has successfully identified "significant" frames (frames that represent stable events such as a new slide, bullet, figure, inked comment, drawing, code entry, application entry etc.). The system can analyze over 20000 frames and typically identifies and stores about 100 significant frames ...
Paul E. Dickson, W. Richards Adrion, Allen R. Hans
Added 13 Dec 2010
Updated 13 Dec 2010
Type Journal
Year 2006
Where ISM
Authors Paul E. Dickson, W. Richards Adrion, Allen R. Hanson
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