MPEG-7 Videotext description scheme for superimposed text in images and video

摘要

Superimposed text and scene text in video, i.e. videotext, brings important semantic clues into content analysis. In this paper we present a videotext description scheme and automatic methods for detection and representation of text in video segments. One of the methods is based on edge characterization while the other is based on region analysis. Applications of the videotext description scheme are numerous ranging from video indexing and annotation, ticker-tape analysis, commercial detection, transcript analysis to cross-modal querying using text and face information.