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Adaptive Video Watermarking using the Bitrate and the Motion Vector  

Ahn, I.Y. (CDS)
Publication Information
전자공학회논문지 IE / v.43, no.4, 2006 , pp. 37-42 More about this Journal
Abstract
This paper proposes a adaptive video watermarking algorithm according to bitrate and motion vector size in MPEG2 system. The watermark strength in the I-frames is adapted for quantization step size and the strength in the P-B-frames is adapted for quantization step size and motion vector of macroblock to make the watermark more robust against the accompanying degradation due to aggressively compression. A realtime watermark extraction is done directly in the DCT domain during MPEG decoding without full decoding of MPEG video. The experimental simulations show that the video quality results almost invisible difference between the watermarked frames and the original frames and the watermark is resistant to frame dropping, MPEG compression, GoP conversion and low pass filter attacks.
Keywords
Watermarking; Video Watermarking; MPEG; Copyright protection;
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