International IT Summit Confluence 2013-The Next Generation Information Technology Summit |
Foundation of Computer Science USA |
CONFLUENCE2013 - Number 1 |
January 2014 |
Authors: Ravinder Singh, Manish Mathuria, Kailash Rathore, Santosh Kumar |
9ffc9bf4-b685-4a55-8f7c-45503f506b8d |
Ravinder Singh, Manish Mathuria, Kailash Rathore, Santosh Kumar . A Robust Color Image Watermarking using Combination of DWT and DCT. International IT Summit Confluence 2013-The Next Generation Information Technology Summit. CONFLUENCE2013, 1 (January 2014), 11-14.
Watermarking on Digital Images have different methods, some of them deals with frequency domain. The Watermarking techniques using frequency domain produce better results either concerns with image quality or invisibility of the watermark. The digital watermarking is such that it provides copyright protection by information hiding. The researchers all over the world are still trying to find out the way to create robust Digital Image Watermarking Techniques. This research paper produces the new concept of efficient watermarking technique for the Color Image by combining both DWT (Discrete Wavelet Transform) and DCT (Discrete Cosine Transform). The result includes combine features of both transformations, so the Watermarking is more Robust than earlier approaches. The Color Image Watermarking is done by selecting one color component from RGB (Red, Green, and Blue) Components of Color Image. The Watermark embeds into any selected component and then again merges with other components. The R (Red) Component plays very important role to the present the color object as well as it is robust to the preserve information associated with it. So, in this research, R (Red) Component is selected to hide Watermark. This approach is more secure because the embedded watermark can only be extract from the Red Component after decomposing Watermarked Image into RGB components, other components (i. e. Blue and Green) does not contain any information about the Watermark.