The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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3D Medical Image Data Watermarking Applied to Healthcare Information Management System

헬스케어 정보 관리 시스템의 3D 의료영상 데이터 다중 워터마킹 기법

  • 이석환 (동명대학교 정보보호학과) ;
  • 권기룡 (부경대학교 전자컴퓨터정보통신공학부)
  • Published : 2009.11.30
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Abstract

The rapid development of healthcare information management for 3D medical digital library, 3D PACS and 3D medical diagnosis has addressed security issues with medical IT technology. This paper presents multiple 3D medical image data for protection, authentication, indexing and diagnosis information hiding applied to healthcare information management. The proposed scheme based on POCS watermarking embeds the robust watermark for doctor's digital signature and information retrieval indexing key to the distribution of vertex curvedness and embeds the fragile watermark for diagnosis information and authentication reference message to the distance difference of vertex. The multiple embedding process designs three convex sets for robustness, fragileness and invisibility and projects 3D medical image data onto three convex sets alternatively and iteratively. Experimental results confirmed that the proposed scheme has the robustness and fragileness to various 3D geometric and mesh modifiers at once.

의료 IT 기술 발전과 함께 의료 디지털 도서관, 3D PACS, 3D 의료진단기기 등의 헬스케어 정보 관리 기술이 급격히 발전되면서 이에 대한 보안 이슈가 제기되고 있다. 본 논문에서는 헬스케어 정보 관리 시스템에서 3D 의료영상 데이터의 저작권 보호, 인증, 인덱싱 및 진단 정보 은닉 등을 위한 다중 워터마킹 기법을 제안한다. 제안한 기법에서는 POCS 워터마킹 기반으로 의료진의 디지털 서명 및 정보 검색 인덱싱을 위한 강인한 워터마크를 꼭지점 정규곡률 분포에 삽입하고, 진단 정보와 인증 기준 메시지를 위한 연약한 워터마크를 꼭지점 거리 차이에 삽입한다. 이 때 강인성, 연약성 및 비가시성에 대한 각각의 볼록 집합들을 설계한 다음, 3D 의료영상 데이터들을 이들 집합으로 반복 투영함으로써 다중 워터마크를 삽입한다. 실험 결과부터 제안한 기법이 다양한 3D 기하학 및 메쉬 변형에 대한 강인성과 연약성을 모두 만족함을 확인하였다.

Keywords

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