Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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UCI Embedder: A Real-time Broadcast-Content-Identifier Watermarking System for Broadcast Content Distribution Services

방송콘텐츠 유통서비스를 위한 실시간 콘텐츠식별자 은닉삽입 시스템

  • Kim, Youn-Hee (Electronics and Telecommunications Research Institute, Broadcasting & Telecommunications Media Research Department) ;
  • Kim, Hyun-Tae (CK&B Co., Ltd. Research Institute) ;
  • Lee, Joo-Young (Electronics and Telecommunications Research Institute, Broadcasting & Telecommunications Media Research Department) ;
  • Nam, Je-Ho (Electronics and Telecommunications Research Institute, Broadcasting & Telecommunications Media Research Department)
  • 김연희 (한국전자통신연구원 방통융합미디어연구부) ;
  • 김현태 (CK&B 기술연구소) ;
  • 이주영 (한국전자통신연구원 방통융합미디어연구부) ;
  • 남제호 (한국전자통신연구원 방통융합미디어연구부)
  • Received : 2011.03.16
  • Accepted : 2011.05.16
  • Published : 2011.05.30
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Abstract

We introduce the standard content identifier Universal Content Identifier (UCI) and a watermarking system that embeds UCI for the broadcast content distribution services. Our proposed UCI embedder is designed in consideration of integrating with the previously established broadcast system and protecting the illegal distribution of broadcast contents. Our goal is that when broadcast content is transmitted, 28 byte UCI is embedded imperceptibly in the content itself in real-time and the embedded UCI is successfully extracted not only in the typical format used in the broadcast content distribution service but also in the illegally distributed broadcast contents. Usually the illegally distributed contents are modified from the original by changing resolutions, frame rates, or adjusting colors. In this paper, we present a watermarking scheme that embeds 28 byte UCI in broadcast content in real-time while keeping the visual quality high and the embedded watermark robust enough to survive through the various modification. The experimental results show that the embedded UCI remains in the various modified versions of content and that the visual degradation by embedding is not noticeable.

국가표준콘텐츠식별체계인 UCI를 이용하여 방송콘텐츠를 식별 관리하면 다양한 형태의 콘텐츠가 개방형 시장에서 거래되는 미래 콘텐츠 유통시장에 대응하여 효과적으로 콘텐츠를 관리 할 수 있다. 방송콘텐츠 유통과정의 특성상 여러 가지 형태의 변형이 콘텐츠에 가해지게 되는데, 변형 콘텐츠도 변형 전에 부여된 식별자로 콘텐츠를 식별할 수 있어야 효과적인 콘텐츠 식별 및 관리가 가능하다. 이에 본 논문에서는 워터마킹 기술을 이용하여 UCI 식별자를 방송콘텐츠에 실시간으로 은닉삽입하는 시스템을 제안한다. 방송콘텐츠를 송출하는 단계에서 UCI 식별자를 은닉삽입하여 콘텐츠 유통의 전 과정을 통해 하나의 식별자로 식별할 수 있도록 고안하였다. 워터마크 삽입과정으로 인한 화질 저하를 최소화하면서도 변형된 콘텐츠에서도 워터마크를 추출할 수 있는 강인성을 요구하는 방송용 워터마크 삽입 시스템으로 기존의 방송시스템과의 연동을 고려하여 HD-SDI 신호 입출력을 지원하도록 설계 구현되었다.

Keywords

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