main categories Robust and Fragile Watermarking

Techniques. The former is mainly used for copy right

protection and fingerprinting applications, in which the goal

of watermark is to sustain under all kinds of attacks that

intend to remove the watermark while preserving the

perceptual quality of the original work. The latter is used for

data authentication which is sensitive against any kind of

processing that is applied to the work.-main categories　Robust and Fragile Watermarking

Techniques. The former is mainly used for copy right

protection and fingerprinting applications, in which the goal

of watermark is to sustain under all kinds of attacks that

intend to remove the watermark while preserving the

perceptual quality of the original work. The latter is used for

data authentication which is sensitive against any kind of

processing that is applied to the work.