Sciweavers

Share
MM
2005
ACM

Augmented segmentation and visualization for presentation videos

11 years 7 months ago
Augmented segmentation and visualization for presentation videos
We investigate methods of segmenting, visualizing, and indexing presentation videos by both audio and visual data. The audio track is segmented by speaker, and augmented with key phrases which are extracted using an Automatic Speech Recognizer (ASR). The video track is segmented by visual dissimilarities and changes in speaker gesturing, and augmented by representative key frames. An interactive user interface combines a visual representation of audio, video, text, key frames, and allows the user to navigate presentation videos. User studies with 176 students of varying knowledge were conducted on 7.5 hours of student presentation video (32 presentations). Tasks included searching for various portions of presentations, both known and unknown to students, and summarizing presentations given the annotations. The results are favorable towards the video summaries and the interface, suggesting faster responses by a factor of 20% compared to having access to the actual video. Accuracy of re...
Alexander Haubold, John R. Kender
Added 26 Jun 2010
Updated 26 Jun 2010
Type Conference
Year 2005
Where MM
Authors Alexander Haubold, John R. Kender
Comments (0)
books