DOI: 10.7763/IJCTE.2012.V4.476
A Comparison between the Hybrid Using Genetic Algorithm and the Pure Hybrid Watermarking Scheme
Abstract—The comparison between the hybrid watermarking using genetic algorithm and the pure hybrid DCT-SVD (Discrete Cosine Transform-Singular Value Decomposition) is presented. The watermark scheme is based on DCT-SVD]; applying DCT to the host image, map the DCT coefficient in a zigzag order, then propose the SVD on the sub-block and the singular value in each sub block that will be modified to embed the watermark image. Afterward the image quality can be improved with the GA-based evolution. Experimental results are shown the best extracted watermark quality of hybrid DCT-SVD between the hybrid using genetic algorithm and pure hybrid DCT-SVD.
Index Terms—Hybrid, genetic algorithm, DCT, SVD.
Didi Rosiyadi and Shi-Jinn Horng are with the Department of Computer Science and Information Engineering, National Taiwan University of Science and Technology (e-mail: didi.rosiyadi@gmail.com, horngsj@yahoo.com.tw).
Nana Suryana and Nurhayati Masthurah are with the Research Center for Informatics-Indonesian Institute of Sciences Jl. Cisitu, Sangkuriang, Bandung, West Java, Indonesia (e-mail: nana@suryana.or.id, masthurah@informatika.lipi.go.id, Phone. +62-22-2504711).