A novel algorithm based on the wavelet transform, which has frequency and spacial characteristics, is proposed.
Both the original image and the watermark are decomposed by wavelet, and the watermark is embedded and extracted using human visual system...
A novel algorithm based on the wavelet transform, which has frequency and spacial characteristics, is proposed.
Both the original image and the watermark are decomposed by wavelet, and the watermark is embedded and extracted using human visual systems.
The proposed algorithm is robust in image processing and compression.
As the watermark is embedded by image rather than signal, watermark extraction is more effective.