Improved text overlay detection in videos using a fusion-based classifier
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 3 (ICME '03) - Volume 03
Reliable Video Clock Time Recognition
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 04
Live sports event detection based on broadcast video and web-casting text
MULTIMEDIA '06 Proceedings of the 14th annual ACM international conference on Multimedia
Time recognition of video clock for live event alert system
ICIMCS '10 Proceedings of the Second International Conference on Internet Multimedia Computing and Service
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Analyzing overlay content in sports video could help us to get reference information about the game. For example, the digital clock on score board, which indicates elapsed time of the game, is very useful to sports game summarization, indexing and retrieval. However, existing methods can only handle well when time clock is on a clean background and appears all the time. This paper has proposed a more general approach to locate and recognize the digit characters on soccer videos. It is notably efficient in reading the clock digits on a transparent overlay, where the clock digits appear and disappear, and they are blurred due to compression. Experimental results show that this approach is robust regardless of contrast, font-size, font-color and background complexity. It is also simple and quick enough for real time clock reading while the video is playing.