Keywords : watermark technique
AL-Rafidain Journal of Computer Sciences and Mathematics,
2010, Volume 7, Issue 2, Pages 125-138
As a result of the development in data transfer technology a cross multimedia and internet, it has became possible to access and copy these information in unauthentical manner . This leads to penetrate digital multimedia security problem.
In this research a hybrid method is designed to protect product from unauthentication access using watermark technique with digital images, these images represent the important part in information systems and many applications. The method indicates hiding the watermark in both spatial and frequency domains using Artificial Intelligent techniques, such as neural networks and genetic algorithms by dividing the watermark depending on the important information contents. The basic important part hides in frequency domain and the second part in spatial domain using Discreet Cosine Transform DCT and Least Significant Bit LSB.
The method efficiency is measured using Peak Signal –to-Noise Ratio PSNR and Normalized Correlation Coefficient NC , Also many attacks is used to measured the watermark robustness and feasibility.