Fast communication: A blind MPEG-2 video watermarking robust to camcorder recording

Authors:
Dooseop Choi;Hoseok Do;Hyuk Choi;Taejeong Kim
Affiliations:
School of Electrical Engineering and Computer Sciences and Institute of New Media and Communications, Seoul National University, South Korea;School of Electrical Engineering and Computer Sciences and Institute of New Media and Communications, Seoul National University, South Korea;School of Computer Science, University of Seoul, South Korea;School of Electrical Engineering and Computer Sciences and Institute of New Media and Communications, Seoul National University, South Korea
Venue:
Signal Processing
Year:
2010

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Abstract

Based on the observation that low-frequency DCT coefficients of an image are less affected by geometric processings, we propose a new blind MPEG-2 video watermarking algorithm robust to camcorder recording. The mean of the low-frequency DCT coefficients of the video is temporally modulated according to the information bits. To avoid watermark's drift into other frames, we embed watermarks only in the B-frames of MPEG-2 videos, which also allows minimal partial decoding and achieves efficiency. Experimental results show that the proposed scheme achieves high video quality and robustness to camcorder recording and other attacks.