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Color Image Watermarking using DWT and DCT Coefficients of R, G, B Color Components
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 50 - Number 8 |
| Year of Publication: 2012 |
| Authors: R. Eswaraiah, Sai Alekya Edara, E. Sreenivasa Reddy and |
10.5120/7794-0904
|
R. Eswaraiah, Sai Alekya Edara, E. Sreenivasa Reddy and . Color Image Watermarking using DWT and DCT Coefficients of R, G, B Color Components. International Journal of Computer Applications. 50, 8 ( July 2012), 38-41. DOI=10.5120/7794-0904
Abstract
Digital image watermarking is the technology used to protect copy right information of multimedia objects. This paper presents a more secure method for copyright protection. In this scheme color image is decomposed into R, G, B channels and then DWT and DCT transformations are applied on these channels separately. The bits of watermark image are embedded into middle frequency coefficients of transformed R, G, B channels. Results reveal the performance of proposed algorithm using the metrics Peak Signal to Noise Ratio and Normalized Correlation and comparison of proposed scheme with the existing methods which used DWT-DCT transformations.
References
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