Index Generation and Advanced Search Functions for

In this paper we will discuss advanced search functions for multimedia data produced by presentation. Such multimedia data consist of video of the speaker and slides used for explanation. In conventional systems, during playback these two components are synchronized and the presentation is played like video tape recorder. Basic functions are play, fast-play, skip, rewind and go-to-the previous-slide. Since the slide part contains characters showing the contents of the explanation, we can use these character strings to nd out proper portions to playback. In our system, two more components are considered, movement of pointer during the explanation, and additional lines for correction, underlines etc. produced during the presentation. These information is also used to nd proper portion in the presentation data.