CARMUL: concurrent automatic recording for multimedia lecture

An advanced multimedia lecture recording system is presented in this paper. The purpose of our system is to capture multimodal information that can be received only when lectures are being held in a classroom where a teacher and students share the same time and space. The system captures not only hand-writings and slide switching intervals but also audio and video of the people with their spatial location information. These recorded media will be served to users in distance learning process. We designed the system so that it does not interfere with classes. It can archive lectures while they hold classes on regular basis and generate a multimedia archive automatically. Teachers are neither asked to remain at a certain place nor wired with devices they would have to put on. We have implemented our approach and our lecture archive system currently works for six classes per week, since October, 2002.