A Representative-Video-Frame Selection Method for a Content-Based Video-Query-Agent System

Katsunobu FUSHIKIDA  Yoshitsugu HIWATARI  Hideyo WAKI  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E83-D   No.6   pp.1274-1281
Publication Date: 2000/06/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Image Processing, Image Pattern Recognition
Keyword: 
video query agent,  optimum r-frames selection,  dynamic programming,  video indexing,  

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Summary: 
An optimum representative-frames (r-frames) selection method using step-wise function approximation has been developed to provide automatic indexing for a video-query-agent (VQA) system. It uses dynamic programming to simultaneously select the r-frames and corresponding segment boundaries. Experiments showed that the approximation error of the selected r-frames was less than that of two conventional methods. Retrieval experiments using a feature-based image-search engine showed that the proposed method is more robust and effective than the two conventional methods. The proposed method was implemented in a VQA system and processing time was evaluated. The results showed that the processing time for indexing was shorter than that of the conventional method.