Robust Image Watermarking Using Discrete Wavelet Transform | Science Publications

Journal of Computer Science

Krishnan Ammasi¹  Dhandapani Samiappan¹ 

关键词: Digital watermarking;    robustness;    Discrete Wavelet Transform (DWT);    attacks;    Least Significant Bits (LSB);    copyright protection;    approximation;    horizontal;    Human Visual System (HVS);   

DOI  :  10.3844/jcssp.2011.1.5

学科分类：计算机科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: Digital Watermarking have gained popularity in recent years as ameans of protecting multimedia data from illegal copying and unlawful reproduction. It is mainly usedfor copyright protection of multimedia data. Approach: In this study an image watermarkingalgorithm which is blind (do not require the presence of host image for detection) and robust isproposed. Results: The proposed watermarking scheme embeds the watermark in the Discrete WaveletTransform (DWT) domain. The watermark is a binary logo and is embedded in the subband of thewavelet decomposition. Conclusion: This watermarking scheme is robust to several attacks like JPEGcompression, rotation, Gaussian filtering, median filtering, cropping, scaling, sharpening, Gaussiannoise and salt and pepper noise.

【 授权许可】

Unknown