Extended Differential Energy Watermarking (XDEW)

Digital video data distribution through the Internet is becoming more common, and is now seen as a powerful marketing media by the entertainment industry. These materials need to be protected to avoid copyright infringement issues. However, they are encoded at a low bit-rate to facilitate Internet distribution and this poses a challenge to the watermarking operation. In this paper we present an extension to the Differential Energy Watermarking (DEW) algorithm, to use it in low bit-rate environment. We present the extension scheme and evaluate its performance in terms of watermark capacity, robustness and visual impact.