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BBC R&D White Paper WHP009

Watermarking:
What is it, Why do it, How can it be used?
R. Salmon

Keywords
video, watermarking

Abstract
This paper is a presentation to an EBU Transmission technology seminar: "Broadband networks: evolution and opportunities for broadcasters" (EBU, Geneva, 26-28 November 2001).

The presentation outlines different forms of watermarking, a general form of implementation, and then discusses some of the reasons for wanting to watermark a broadcast stream and the conflicting requirements these impose on the system. Finally it goes on to discuss the possible disposition of watermarking embedders and detectors in a broadcast environment, and presents the outline of the EBU generic model, as extended in include watermarking at source (e.g. in the camera).