Watermark is an important protection and identification technique that
allows invisible mark to be placed on top of normal information such
as bank note, ID card, magnetic card and valuable documents. Watermark
ing techniques have been developed to protect digital images against i
llegal reproduction and illegal modifications when visibility to users
is required. Here, we will present a new adaptive watermarking algori
thm. The adaptive watermark is generated from the image content and ca
n be treated as a digital fingerprint of the image. The proposed water
mark is robust enough against any degradation, hacking and attack.