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ICIP
1994
IEEE

A Digital Watermark

15 years 27 days ago
A Digital Watermark
This paper discusses the feasibility of coding an "undetectable" digital water mark on a standard 512*512 intensity image with an 8 bit gray scale. The watermark is capable of carrying such information as authentication or authorisation codes, or a legend essential for image interpretation. This capability is envisaged to find application in image tagging, copyright enforcement, counterfeit protection, and controlled access. Two methods of implementation are discussed. The first is based on bit plane manipulation of the LSB, which offers easy and rapid decoding. The second method utilises linear addition of the water mark to the image data, and is more difficult to decode, offering inherent security. This linearity property also allows some image processing, such as averaging, to take place on the image, without corrupting the water mark beyond recovery. Either method is potentially compatible with JPEG and MPEG processing.
Ron G. van Schyndel, Andrew Z. Tirkel, C. F. Osbor
Added 29 Oct 2009
Updated 29 Oct 2009
Type Conference
Year 1994
Where ICIP
Authors Ron G. van Schyndel, Andrew Z. Tirkel, C. F. Osborne
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