Abstract/Details

Automatic capture and creation of presentations from multimedia lectures


2008 2008

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Abstract (summary)

This dissertation describes the design, implementation, and testing of Presentations Automatically Organized from Lectures (PAOL), a content capture system that automatically captures lectures. The captured lectures are organized into a presentation that includes a video, a thumbnail-based table of contents, and windows containing the material currently being presented on computer and whiteboard. These presentations are searchable using the table of contents and give the viewer access to all material presented in the lecture. The capture process occurs transparently to the lecturer with the only requirement being that the lecturer wear a wireless microphone. No training or installation of special software is required. These presentations are created to give students access to class content after the class and through the table of contents allow students to review specific portions of the material presented.

PAOL is divided into 3 subsystems: video creation, computer capture, and whiteboard capture. Details are given on the design and implementation of each subsystem and the success of different approaches to subsystem tasks. All subsystems rely on image processing techniques to create the content of the output presentation.

Image processing techniques are used to create a video of the lecturer from fixed-view high-resolution cameras focused on the whiteboard. Image processing techniques are also used to identify significant changes on the computer and whiteboard in order to form the table of contents. The whiteboard images are also processed to remove the instructor, heighten contrast, and improve clarity.

Indexing (details)


Subject
Computer science
Classification
0984: Computer science
Identifier / keyword
Applied sciences, Automatic capture, Image processing, Indexing, Lecture recording, Multimedia lectures, Presentations, Video creation
Title
Automatic capture and creation of presentations from multimedia lectures
Author
Dickson, Paul E.
Number of pages
178
Publication year
2008
Degree date
2008
School code
0118
Source
DAI-B 69/12, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780549915386
Advisor
Adrion, W. Richards; Hanson, Allen R.
Committee member
Burleson, Wayne P.; Shenoy, Prashant
University/institution
University of Massachusetts Amherst
Department
Computer Science
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3336952
ProQuest document ID
304566159
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304566159
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