• Title/Summary/Keyword: 컴퓨터집적영상복원

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Robust and Secure InIm-based 3D Watermarking Scheme using Cellular Automata Transform (셀룰러 오토마타 변환을 이용한 집적영상 기반의 강인하고 안전한 3D 워터마킹 방법)

  • Piao, Yong-Ri;Kim, Seok-Tae
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.9
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    • pp.1767-1778
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    • 2009
  • A robust and secure InIm(Integral imaging)-based 3D watermarking scheme using cellular automata transform (CAI) is proposed. In the InIm-based 3D watermarking scheme, the elemental image array (EIA) watermark for the target watermark which has to be detected, is synthesized from the computational pickup process of InIm and embedded in a cover image. The EIA watermark can provide a robust reconstruction of the target watermark However, the 3D property of the EIA watermark causes a weakening of the security. To overcome this problem, the proposed method uses the CAT domain to embed and extract the EIA watermark in the cover image. The use of CAT significantly improves the security for our watermarking algorithm using a single secure key only. Experiments are presented to show that the proposed scheme shows robust and secure performances against various attacks.

Resolution enhancement of depth data-extracted from Integral imaging and Intermediate-view Reconstruction Technique for Computer-generated holograms generation of a 3D object (컴퓨터 형성 홀로그램 생성을 위한 집적영상과 중간시점 복원 기법으로 부터 3차원 물체의 고해상도의 깊이 정보추출)

  • Lee Jong-Kil;Lee Kwang-Jin;Lee Dong-Hwi;Kim Seung-Cheol;Kim Eun-Soo
    • Proceedings of the Korean Institute of Communication Sciences Conference
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    • 2006.07a
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    • pp.281-281
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    • 2006
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