17 Dec
2003
17 Dec
'03
11:17 p.m.
Adam Shostack <adam@homeport.org> wrote..
Creating watermarks that can't be removed without degrading image quality is not especially difficult. The two tricky bits are durability and collusion protection.
The difficulty I can see is with the "without degrading image quality" part. Given ever-improving image enhancement and processing techniques, someone probably could - or at least will be able to in the near future - take any image in which the watermark didn't degrade the image by itself and remove the watermark without _perceptible_ alterations in image quality.
I hope someone, somewhere finds this interesting...
Yes, actually; I was just at a seminar on computer image interpretation for the biomedical field. -Allen