Synchronization of lecture videos and electronic slides by video text analysis

• Main Authors: WANG, Feng, NGO, Chong-wah, PONG, Ting-Chuen
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2003
• Subjects: Lecture videos; Synchronization; Video text analysis; Graphics and Human Computer Interfaces; Theory and Algorithms
• Online Access: https://ink.library.smu.edu.sg/sis_research/6455; https://ink.library.smu.edu.sg/context/sis_research/article/7458/viewcontent/957013.957080.pdf
• Institution: Singapore Management University

An essential goal of structuring lecture videos captured in live presentation is to provide a synchronized view of video clips and electronic slides. This paper presents an automatic approach to match video clips and slides based on the analysis of text embedded in lecture videos. We describe a method to reconstruct high-resolution video texts from multiple keyframes for robust OCRrecognition. A two-stage matching algorithm based on the title and content similarity measures between video clips and slides is also proposed.