AUTHENTICATION OF DIGITAL IMAGE BASED ON DWT-SVD AND TA
Nagwar Pragnya, Aravind Naik · IJITR · 2015
Digital watermarking is a process in which data can be hide into other image or audio or document. This data can be anything like secret data or it may be data which provides authenticity. Data can be hide in spatial or in frequency domain. since frequency domain technique is more robust against different kind of signal and non-signal processing attacks. And watermark can be extracted by blind or non-blind techniques.in this paper we proposed blind image watermark techniques and watermark is embedded using frequency domain using discrete wavelet transform, singular value decomposition and torus automorphism technique. This method proves that it is robust against different signal and non-signal processing attacks and watermark can be extracted without cover image.