Study of Fractal in building up the Digital Watermark' s Robusting
Ang W · 2006
Based on the strongly robusting character against geometric distortion of self- similar fractal and the character of Human Vi- sual System (HVS),a new algorithm for digital watermark is put forward。The method operates in the frequency domain and spatial domain. The digital watermark information is transformed into coefficients of an IFS after the original image has been done frequency transformation, and then the self- similar fractal image created by this IFS is embedded into the special area of the image. The algo- rithm is tested in robusting against geometric distortion and of imperceptibility of human eyes.