Invisible Watermarking of Color Images using SVD and DWT

The rapid growth of the world wide web and the wide spread usage of multimedia in the internet has resulted in various security and authenticity issues. Everyday multimedia content is shared via internet to different locations and different people across the globe. The various image processing techniques available today allows intellectual property theft and reproduction of digital images in an unauthorized way. This has given rise to the need to protect copyright of digital images. Protection of copyright of the digital image is done through the process of water marking. This process embeds an authentication mark (water mark image) into the actual image that is transmitted over the internet (cover image) to avoid unauthorized reproduction of the digital images. In this paper, an effective and robust invisible water making method is proposed using the Discrete Wavelet Transform (DWT) and Singular value Decomposition (SVD). Keywords—authentication; copyrightprotection; robustness; discrete wavelet transform; singular value decomposistion.