ADAPTIVE REAL-TIME WATERMARKING USING BLOCK CLASSIFICATION FOR H.264 COMPRESSED DOMAIN

Yin Zhang, Zengxiang Lu, Haiming Lu

Abstract

Focusing on the problem that watermark can cause visible image distortions in some plain areas, an adaptive watermarking algorithm for H.264 is proposed. To embed watermark quickly, we directly operate in the DCT domain. For high imperceptibility, we classify the blocks based on Human Visual System (HVS). However, most current classification methods are not suitable for H.264 compressed domain because the DCT coefficients residue cannot reflect the texture activity accurately due to the employment of intra-prediction. A new block classification method is applied, in which we make restriction during the encoding process so that the 4×4 blocks can be classified into plain, edge and texture blocks according to the intra-prediction mode and quantized integer DCT coefficients in compressed domain. It is effective in block classification and realizes good adaptive performance for watermarking. Drift compensation is also accomplished in our watermarking algorithm. The experimental results demonstrate our watermarking method can achieve both large capacity and good image imperceptibility. Additionally, the method is simple and appropriate for real-time applications.

References

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Paper Citation


in Harvard Style

Zhang Y., Lu Z. and Lu H. (2008). ADAPTIVE REAL-TIME WATERMARKING USING BLOCK CLASSIFICATION FOR H.264 COMPRESSED DOMAIN . In Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2008) ISBN 978-989-8111-60-9, pages 308-313. DOI: 10.5220/0001935703080313


in Bibtex Style

@conference{sigmap08,
author={Yin Zhang and Zengxiang Lu and Haiming Lu},
title={ADAPTIVE REAL-TIME WATERMARKING USING BLOCK CLASSIFICATION FOR H.264 COMPRESSED DOMAIN},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2008)},
year={2008},
pages={308-313},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001935703080313},
isbn={978-989-8111-60-9},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2008)
TI - ADAPTIVE REAL-TIME WATERMARKING USING BLOCK CLASSIFICATION FOR H.264 COMPRESSED DOMAIN
SN - 978-989-8111-60-9
AU - Zhang Y.
AU - Lu Z.
AU - Lu H.
PY - 2008
SP - 308
EP - 313
DO - 10.5220/0001935703080313