Video Degradation Model and Its Application to Character Recognition in e-Learning Videos

  • Jun Sun
  • Yutaka Katsuyama
  • Satoshi Naoi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3163)


As the rapid popularization of digital imaging equipment, video character recognition becomes more and more important. Compared with traditional scanned document, characters in video document usually suffer from great degradation and meet trouble in recognition. Thus, a systematically study of video degradation will be very useful for video OCR. In this paper, a video degradation model is proposed to imitate the process of video character image generation. The generated character images are used to make synthetic dictionaries to improve the recognition performance of real degraded characters in e-Learning videos. Experiments on 24317 e-Learning video characters prove the effectiveness of our method.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Jun Sun
    • 1
  • Yutaka Katsuyama
    • 2
  • Satoshi Naoi
    • 2
  1. 1.Fujitsu R&D Center Co., LTD.BeijingP.R. China
  2. 2.Fujitsu Laboratories LTDKawasakiJapan

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