- 期刊
Semi-Fragile Watermarking Scheme for Authentication of JPEG Images
並列摘要
This paper presents a novel digital watermarking method for verifying the authentication of JPEG images, by applying the novel concept of lowest authenticable JPEG quality (LAJQ). Given a LAJQ, the authenticity of the watermarked JPEG image will be protected as long as its final JPEG compressing quality is not less than the LAJQ. The image feature is generated based on the relationships of discrete cosine transfer (DCT) coefficients in the low/middle frequency domain. The image feature is then embedded in the high frequency domain for protection, and can be extracted without the original image. In addition, the parts that are modified by the malicious attack can be located in the authentication result image. The related theorems of this scheme are fully analyzed to strengthen the proposed solution, and the experimental results show that this new method is indeed effective for JPEG image authentication.
被引用紀錄
延伸閱讀
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