Dual Image Watermarking Technique using Edge Detection Based on Singular Value Decomposition and Discrete Wavelet Transform on Color Image

To deal with the problems like copyright protection and the proof of rightful ownership, the concept of image watermarking came into existence. A digital watermark is a sequence of information containing the owner’s copyright for the multimedia data. Watermark is inserted invisibly in host image so that it can be embedded at later times for the evidence of rightful ownership. In this paper, Dual image watermarking is used to protect from these problems. An attempt has been made to embed watermarks using SVD-DWT and canny edge detector invisibly. Results are evaluated in terms of benchmark metrics PSNR, MSE, Correlation Coefficient (CC), and BER (Bit Error Rate). Metrics are calculated for host image after embedding and extraction of both watermarks. Values of parameters support that the dual image watermarking is more robust and imperceptible. Keywords— Watermarking, Discrete Wavelet Transform , Singular Value Decomposition, Edge Detection, PSNR , MSE, BER and CC.