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Novel Efficient ImageWatermark Algorithm Based on DFT Transform
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- 발행기관
- 보안공학연구지원센터(IJSIP) 바로가기
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- 간행물
- International Journal of Signal Processing, Image Processing and Pattern Recognition 바로가기
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- 통권
- Vol.9 No.10 (2016.10)바로가기
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- 페이지
- pp.297-312
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- 저자
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- 언어
- 영어(ENG)
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- URL
- https://www.earticle.net/Article/A288635
※ 원문제공기관과의 협약기간이 종료되어 열람이 제한될 수 있습니다.
원문정보
초록
- 영어
- In order to improve watermark capacity, image quality and error correction capability of DFT-based watermark algorithm, this paper proposes a novel efficient image watermark algorithm based on DFT transform. Firstly, the watermark information is encoded by using hybrid error correcting code, and the watermark is embedded into an image, and the code ensures that the correct rate of watermark extraction is 100% in the condition of the watermarked image under attacks. Secondly, through changing the way of embedding watermark into the frequency domain data block, watermark capacity can be increased to 2 times of the original algorithm. Thirdly, through extending the frequency domain region of embedding watermark, visual effect of the watermarked image is obviously improved and watermark capacity can be increased. The experimental results show that the proposed algorithm is significantly better than the original algorithm in robustness, and it can ensure that the correct rate of watermark extraction is 100% after the watermarked image suffered with attacks, and the proposed algorithm and the original algorithm are basically the same in PSNR, and the proposed algorithm is better than the original algorithm in visual effect of watermarked image.
목차
Abstract
1. Introduction
2. Analysis of the Performance of the Original DFT-based Watermark Algorithm
2.1. Transparency
2.2. Robustness
2.3. Shortcomings of the Original Algorithm
3. Compostion of Algorithm Improvement
3.1. Hybrid Error Correcting Code
3.2. Embed 2 Bits Watermark Value in Each 4×4 Block
3.3. Extend the Frequency Domain Region of Embedding Watermark
4. Proposed Watermarking Scheme
4.1. Watermark Embedding
4.2. Watermark Extraction
5. Experimental Results and Performance Analysis
5.1. Transparency
5.2. Robustness
6. Conclusions
References
키워드
Image Watermark DFT hybrid error correction code저자
간행물 정보
발행기관
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- 발행기관명
- 보안공학연구지원센터(IJSIP) [Science & Engineering Research Support Center, Republic of Korea(IJSIP)]
- 설립연도
- 2006
- 분야
- 공학>컴퓨터학
- 소개
- 1. 보안공학에 대한 각종 조사 및 연구 2. 보안공학에 대한 응용기술 연구 및 발표 3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최 4. 보안공학 기술의 상호 협조 및 정보교환 5. 보안공학에 관한 표준화 사업 및 규격의 제정 6. 보안공학에 관한 산학연 협동의 증진 7. 국제적 학술 교류 및 기술 협력 8. 보안공학에 관한 논문지 발간 9. 기타 본 회 목적 달성에 필요한 사업
간행물
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- 간행물명
- International Journal of Signal Processing, Image Processing and Pattern Recognition
- 간기
- 격월간
- pISSN
- 2005-4254
- 수록기간
- 2008~2016
- 십진분류
- KDC 505 DDC 605
이 권호 내 다른 논문 / International Journal of Signal Processing, Image Processing and Pattern Recognition Vol.9 No.10
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