Author : Shaila R Hallur, Suresh Kuri and G. H. Kulkarni

Digital image watermarking is a method of embedding piece of information into digital content (i.e. images, audio, video and text) and also provides authenticity to digital content. This paper describes the robust digital image watermarking for color image based on algorithms discrete wavelet transform (DWT), discrete cosine transform (DCT) and singular value decomposition (SVD). Performance analysis of the proposed algorithm is carried out by evaluating the performance metrics like MSE, PSNR and NCC values to check effectiveness and imperceptibility of the watermarked image with different attacks like resizing, rotation, salt and pepper noise etc. The main aim of our paper is to provide robustness, security and authenticity to the image.

Keywords: dwt, dct, svd, embedding, extraction, watermarking.

Article published in International Journal of Current Engineering and Technology, Vol.5, No.4 (Aug-2015)