A Mixture Transformation of Watermarking Algorithm Based on DCT and DWT
The digital watermark technology is the method of protecting the information security and at present, which widely uses in the digital media copyright in the protection. Analyzes the algorithm of watermarking based on the discrete wavelet transform and the discrete cosine transform. The experimental results show that the algorithm can assure good imperceptibility for watermark image and the watermark embedded using the algorithm has good robustness against the attackssuch as JPEG compression and noise addition.