Reducing input data via image categorization to improve the speed of copyright content management systems


An optical correlator has the advantage of high data transfer speed and parallel operation. However, in copyright content management systems (CCMSs), the numerous video files that need to be downloaded from the Internet and input to the optical correlator constitute a bottleneck. This paper proposes an image categorization method for CCMSs that uses the difference in the color features between animation and live-action images to remove this bottleneck and increase the speed of CCMSs. The results of experiments conducted indicate that the proposed method achieves a live-action video true rejection rate of 86.7 % and an animation video false rejection rate of 13.3 %. This indicates that the proposed method can improve the overall speed of a CCMS more than twice the original speed.

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The authors would like to thank Professor K. Kodate and Doctor J. Mizuno at Photonic System Solutions Inc. for valuable discussions throughout this work.

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Correspondence to Kanami Ikeda.

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Ikeda, K., Watanabe, E. Reducing input data via image categorization to improve the speed of copyright content management systems. Opt Rev 22, 93–98 (2015).

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  • Correlators
  • Copyright content management
  • Video identification
  • Optical disks
  • Holography