Abstract
The noise have so many effects on secret message embedded on
cover image, which cause a high distortion it could reach not to retrieve
or difficult to recognize in case of image.
In this research a study of noise effect on the image watermark
when it embedded on the image contourlet coefficients (contourlet
transformation was used as a recent transform for image), so the
watermark was embedded in the coefficients which has the low energy to
make less effect on the layout as much as possible in addition to give
wide area.
Different type of noise were added (Gaussain, Salt&Pepper and
Speckle Noise) on the practical application shows a clear effect for
Gaussain Noise and low effect for Speckle Noise in addition to high
security robustness plus difficulty to attacked by hackers.