Linking multimedia presentations with their symbolic source documents: algorithm and applications

An algorithm is presented that automatically matches images of presentation slides to the symbolic source file (e.g., PowerPointTM or AcrobatTM ) from which they were generated. The images are captured either by tapping the video output from a laptop connected to a projector or by taking a picture of what’s displayed on the screen in a conference room. The matching algorithm extracts features from the image data, including OCR output, edges, projection profiles, and layout and determines the symbolic file that contains the most similar collection of features. This algorithm enables several unique applications for enhancing a meeting in real-time and accessing the audio and video that were recorded while a presentation was being given. These applications include the simultaneous translation of presentation slides during a meeting, linking video clips inside a PowerPoint file that show how each slide was described by the presenter, and retrieving presentation recordings using digital ...

• Type: Conference
• Year: 2003
• Where: MM
• Authors: Berna Erol, Jonathan J. Hull, Dar-Shyang Lee
• Keywords: MM 2003, Presentation Recording, Presentation Slides, Symbolic Source File