지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.11
- 수록면
- 891 - 894 (4page)
이용수
초록· 키워드
오류제보하기
In this paper, a novel reversible watermarking method for gray-scale image is proposed. Error expansion method was proposed by Tian in [1]. By using Haar wavelet transform on two neighbor pixels, it embeds secret bit in the difference between two neighbor pixels, that is called as error expansion. However, because of the overflow problem after embedding, we need location map which will consume lots of capacity. In this paper, we try to handle this problem. The proposed algorithm focuses on the 3 by 3 matrix around the processing pixel. Depending on the difference between the center pixel and the average value of two pixels on the border in the same direction, we choose one direction to embed data. We also find a now transform for embedding action. Experiments show that our algorithm works well on some test images compared to [1].
목차
Abstract
Ⅰ. Introdcution
Ⅱ. Related Work
Ⅲ. Proposed Method
Ⅳ. Experiments
Ⅳ. Conclusion
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UCI(KEPA) : I410-ECN-0101-2015-560-001024604