Low Error Detection in Image Watermarking Using DCT

DOI

10.2991/icmse-18.2018.26How to use a DOI?

Keywords

Watermark detection; DCT; DHT; integer-valued;

Abstract

Due to round-off errors, watermark detection may not be perfect in the absence of attacks. In this paper, watermarks are adjusted so that the watermarked image is integer-valued. Near-perfect detection is achieved by the DC components of DCT and approximation images. Perfect detection is achieved by full-band watermarking. Although the adjusted watermark is image-dependant, it need not be stored in a watermark bank, as it can be generated from an original watermark and a host image. In this paper, the DC components of discrete cosine transform (DCT) and discrete Hadamard transform (DHT) are shown to be able to attain near-perfect detection, while perfect detection is achieved by full-band watermarking. Time-domain watermarking is not band-limited and hence is equivalent to full-band watermarking.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Li Chen
PY  - 2018/05
DA  - 2018/05
TI  - Low Error Detection in Image Watermarking Using DCT
BT  - Proceedings of the 2018 8th International Conference on Manufacturing Science and Engineering (ICMSE 2018)
PB  - Atlantis Press
SP  - 129
EP  - 132
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmse-18.2018.26
DO  - 10.2991/icmse-18.2018.26
ID  - Chen2018/05
ER  -