Space/spatial-frequency based image watermarking

An image watermarking procedure in the space/spatial-frequency domain is proposed. Space/spatial-frequency regions to be watermarked are selected by using the two-dimensional spectrogram. In order to provide both the imperceptibility and robustness of the procedure, a watermark is modeled according...

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Bibliographic Details
Published in:	2008 50th International Symposium ELMAR Vol. 1; pp. 101 - 104
Main Authors:	Zaric, N., Orovic, I., Stankovic, S., Ioana, C.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-09-2008
Subjects:	Filtering Fourier transforms Frequency estimation Image watermarking Pixel Robustness Signal analysis Signal processing Space-varying filtering Space/spatial-frequency representations Spectrogram Testing Watermarking
Online Access:	Get full text
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Summary:	An image watermarking procedure in the space/spatial-frequency domain is proposed. Space/spatial-frequency regions to be watermarked are selected by using the two-dimensional spectrogram. In order to provide both the imperceptibility and robustness of the procedure, a watermark is modeled according to the specific characteristics of pixelspsila regions. The inversion from the space/spatial-frequency domain is provided by using the concept of space-varying filtering. The correlation based watermark detection is performed in the space/spatial-frequency domain as well. The efficiency of the proposed procedure is tested in the presence of various common signal processing.
ISBN:	9781424433643 1424433649
ISSN:	1334-2630