Journal of Korea Multimedia Society (한국멀티미디어학회논문지)

Korea Multimedia Society (한국멀티미디어학회)
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A Polyline Watermarking Scheme for GIS Vector Map

GIS 벡터맵 폴리라인 워터마킹 방법

  • 김준희 (부경대학교 정보공학과) ;
  • 이석환 (동명대학교 정보보호학과) ;
  • 권성근 (삼성전자 무선사업부) ;
  • 박승섭 (부경대학교 컴퓨터공학과) ;
  • 권기룡 (부경대학교 IT융합응용공학과)
  • Received : 2009.09.25
  • Accepted : 2010.03.23
  • Published : 2010.04.30
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Abstract

Recently the commercial value of GIS(geographic information system) has been increased with growing application demands of spatial information in life space. Also, GIS has been expanded to the integrated information system that provides the ease access to map information by public users and also the combined service of GIS map data and various multimedia contents. But several security problems of GIS map data have brought up at GIS industries, such as the illegal copy and distribution of GIS map data. Furthermore, the copyright protection of GIS map data has not been researched yet compared with image and video contents. This paper presents a polyline based watermarking scheme for the copyright protection of GIS vector map. The proposed scheme analyzes the structure of vector map and embeds adaptively the watermark by using the distance distribution of polyline components. From experimental results, we verified that the proposed scheme satisfies the invisibility and the robustness of geometrical attacks.

최근 생활 공간 상에서 공간 정보의 활용 요구가 증대되면서 GIS의 상업적 가치가 증대되고 있다. 또한 GIS는 전문 시스템이 아닌 일반 사용자가 접근할 수 있고, 다양한 콘텐츠와 결합된 GIS 맵 데이터를 서비스하는 통합정보시스템으로 확장되고 있다. 그러나 GIS 맵 데이터의 불법 복제 및 유통이 증가하고 있는 추세이나, GIS 맵 데이터의 저작권 보호 기술은 매우 미흡한 실정이다. 따라서 본 논문에서는 GIS 맵 데이터의 저작권 보호를 위한 폴리라인 워터마킹 방법을 제시한다. 제안한 방법에서는 GIS의 국내 표준 데이터를 분석한 다음, 폴리라인 구성 요소간의 거리를 이용하여 워터마크를 적응적으로 삽입한다. 실험 결과로부터 제안한 방법이 다양한 기학학적 공격에 강인하며, 또한 비가시성이 우수함을 확인하였다.

Keywords

Acknowledgement

Supported by : 한국연구재단

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