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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.1
- 수록면
- 187 - 193 (7page)
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초록· 키워드
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An image authentication scheme for gray scale image through embedding a digital watermark by quantization of Integer Wavelet Transform (IWT) coefficients of the image is proposed in this paper. Proposed method is designed to detect modification of an image and to identify tampered location of the image. To embed the watermark mid-frequency band of a second level IWT was used. An approximation of the original image based on LL band was stored in LSB bits of the pixel data as a recovery mark for restoration of the image. Watermarked image has achieved a good PSNR of 40 dB compared to original cover image. Restored image quality was also very good with a PSNR of more than 35 dB compared to unmodified watermarked image even when 25% of the received image is cropped. Thus, the proposed method ensures a proper balance between the fidelity of the watermarked image and the quality of the restored image.
목차
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참고문헌 (16)
참고문헌 신청
A. T. S. Ho / 2008 / Fragile Watermarking Based on Encoding of the Zeroes of the z-Transform / IEEE Transactions on Information Forensics and Secu-rity 3 (3) : 567 ~ 569
C-C Chang / 2007 / An SVD Oriented Watermark Embedding Scheme with High Qualities for the Restored Image / International Journal of Innovative Computing, Information and Con
C. Fei / 2009 / A Hypothesis Testing Approach for Achieving Semi-fragility in Multimedia Authentication / IEEE Transactions on Information Forensics and Security 4 (2)
C. H. Lin / 2011 / Multipurpose Watermarking Based on Blind Vector Quantization (BVQ) / Journal of Information Hiding and Multimedia Signal Processing 2 (3)
C.-Y. Lin / 2001 / A robust image authentication method distinguishing JPEG compression from malicious manipulation / IEEE Trans. Circuits Syst. Video Technol. 11 (2) : 153 ~
C-C Chang / 2007 / An SVD Oriented Watermark Embedding Scheme with High Qualities for the Restored Image / International Journal of Innovative Computing, Information and Con
C. Fei / 2009 / A Hypothesis Testing Approach for Achieving Semi-fragility in Multimedia Authentication / IEEE Transactions on Information Forensics and Security 4 (2)
C. H. Lin / 2011 / Multipurpose Watermarking Based on Blind Vector Quantization (BVQ) / Journal of Information Hiding and Multimedia Signal Processing 2 (3)
C.-Y. Lin / 2001 / A robust image authentication method distinguishing JPEG compression from malicious manipulation / IEEE Trans. Circuits Syst. Video Technol. 11 (2) : 153 ~
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