17 Dec
2003
17 Dec
'03
11:17 p.m.
Creating watermarks that can't be removed without degrading image quality is not especially difficult. The two tricky bits are durability and collusion protection. Durability involves ensuring enough of a watermark remains after the image is converted to a JPEG. Colusion protection is making sure that users can't compare images and remove the watermark without a large number of users being involved. Adam | Financial Times, 22 Feb 96 | Attempts to remove the watermark would be virtually | impossible without degrading the image quality. Moreover, | counterfeiting would be almost impossible, says NEC. the | Japanese electronics company. -- "It is seldom that liberty of any kind is lost all at once." -Hume