A ROBUST WATERMARKING SCHEME BASED ON EDGE DETECTION AND CONTRAST SENSITIVITY FUNCTION

John N. Ellinas, Dimitrios E. Manolakis

2007

Abstract

The efficiency of an image watermarking technique depends on the preservation of visually significant information. This is attained by embedding the watermark transparently with the maximum possible strength. The current paper presents an approach for still image digital watermarking in which the watermark embedding process employs the wavelet transform and incorporates Human Visual System (HVS) characteristics. The sensitivity of a human observer to contrast with respect to spatial frequency is described by the Contrast Sensitivity Function (CSF).The strength of the watermark within the decomposition subbands, which occupy an interval on the spatial frequencies, is adjusted according to this sensitivity. Moreover, the watermark embedding process is carried over the subband coefficients that lie on edges where distortions are less noticeable. The experimental evaluation of the proposed method shows very good results in terms of robustness and transparency.

Paper Citation

in Harvard Style

N. Ellinas J. and E. Manolakis D. (2007). A ROBUST WATERMARKING SCHEME BASED ON EDGE DETECTION AND CONTRAST SENSITIVITY FUNCTION . In Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, ISBN 978-972-8865-73-3, pages 93-100. DOI: 10.5220/0002047900930100

in Bibtex Style

@conference{visapp07,
author={John N. Ellinas and Dimitrios E. Manolakis},
title={A ROBUST WATERMARKING SCHEME BASED ON EDGE DETECTION AND CONTRAST SENSITIVITY FUNCTION},
booktitle={Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP,},
year={2007},
pages={93-100},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002047900930100},
isbn={978-972-8865-73-3},
}

in EndNote Style

TY - CONF
JO - Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP,
TI - A ROBUST WATERMARKING SCHEME BASED ON EDGE DETECTION AND CONTRAST SENSITIVITY FUNCTION
SN - 978-972-8865-73-3
AU - N. Ellinas J.
AU - E. Manolakis D.
PY - 2007
SP - 93
EP - 100
DO - 10.5220/0002047900930100