Conference Proceeding

A robust system for text extraction in video

Chinese Acad. of Sci., Beijing
01/2008; DOI:10.1109/ICMV.2007.4469284 ISBN: 978-1-4244-1624-0 pp.119 - 124 In proceeding of: Machine Vision, 2007. ICMV 2007. International Conference on
Source: IEEE Xplore

ABSTRACT This paper presents a novel system to extract caption text in video. Firstly, text regions are detected primarily with emphasis on the recall rate. Then a multiple stage verification scheme is adopted to discard false alarms and boost the precision rate. Secondly, a text polarity estimation algorithm is provided. Based on it, multiple frame enhancement is conducted to strengthen the contrast between text and its background. Finally, a connected component filtering method is proposed to generate clear segmentation results and improve recognition performance. Experimental results confirm that the proposed system is robust and efficient.

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Keywords

caption text
 
connected component
 
false alarms
 
multiple frame enhancement
 
multiple stage verification scheme
 
novel system
 
paper presents
 
proposed system
 
recall rate
 
recognition performance
 
text polarity estimation algorithm
 
text regions