Image Watermarking Algorithm Using Dct, Svd and Edge Detection Technique

Proposed watermarking algorithm is best suitable for the protection of multimedia content by using the concept of Digital Watermark. Proposed watermarking algorithm is developed by using a combination of Discrete Cosine Transform (DCT), Singular Value Decomposition (SVD) frequency domains and Canny Edge detection technique. The proposed algorithm is a Non-blind watermarking algorithm. By using SVD the robustness of the algorithm can be increased. By incorporating edge detection technique invisibility of the watermark can be increased. The proposed algorithm is more secure and robust to various attacks like JPEG Compression, rotation, histogram equalization, scaling, cropping, salt & pepper noise, and filtering etc. Experimental results are evaluated using PSNR (Peak Signal-to-Noise Ratio) and Correlation (CORR) values. Experimental results show that the new watermarking scheme is more robust than the existing DCT and SVD method. Analysis and experimental results show that the new watermarking algorithm performs well in both security and robustness