Tamper Localization In Wavelet Domain Using Semi-Fragile Watermarking
- Sandipbhai Mangroliya
- Ketki Pathak
Multimedia security, Digital watermarking, Random permutation, Image authentication
This paper proposes a novel image authentication scheme in the DWT domain. The scheme uses a semi-fragile watermark to detect and precisely locate malicious tampering region in images. The wavelet coefficients selected for embedding are randomly permuted with a secret key, achieving high security. A bit of the watermark is embedded in a group of coefficients by means of quantization. The experimental results show, that our algorithm achieves good image quality and high tampering detection resolution at a low watermark payload, compared to block-based authentication schemes. The watermark is protected against local attacks. We have also conducted experiments to demonstrate the robustness of the watermark against mild to moderate JPEG compression.
Sandipbhai Mangroliya, Ketki Pathak. "Tamper Localization In Wavelet Domain Using Semi-Fragile Watermarking".INTERNATIONAL JOURNAL OF ENGINEERING DEVELOPMENT AND RESEARCH ISSN:2321-9939, Vol.2, Issue 2, pp.2878-2883, URL :https://rjwave.org/ijedr/papers/IJEDR1402253.pdf
Volume 2 Issue 2
Pages. 2878-2883
