한국방송∙미디어공학회:학술대회논문집 (Proceedings of the Korean Society of Broadcast Engineers Conference)
- 한국방송∙미디어공학회 2018년도 추계학술대회
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- Pages.87-89
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- 2018
기하학적 공격에 강한 고신뢰성 SVD 기반 워터마킹방안
A Reliable SVD Based Watermarking Scheme Resistant to Geometric Attacks
- Dung, Luong Ngoc Thuy (Kyung Hee University) ;
- Sohn, Won (Kyung Hee University)
- 발행 : 2018.11.02
초록
We proposed an improved reliable SVD-based watermarking scheme resistant to geometric attacks while having high fidelity with no false-positive problem. Principal components of a watermark image are embedded into singular values of LL, LH, HL, and HH sub-bands of a transformed cover image by RDWT(redundant discrete wavelet transform) with optimal scale factors. Each scale factor is generated by trading-off fidelity and robustness using Differential Evolution (DE) algorithm. Zernike Moment (ZM) is used to estimate the geometric distortion and to correct the watermarked image before extracting watermark. The proposed scheme improves fidelity and robustness of existing reliable SVD based watermarking schemes while resisting to geometric attacks.