Image watermarking on Gaussian low pass components ignoring edges and its neighbor pixels
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Publication Details
Author list: Morshed A.B.M.M., Amornraksa T.
Publisher: Society of Photo-optical Instrumentation Engineers
Publication year: 2011
Volume number: 8285
ISBN: 9780819489326
ISSN: 0277-786X
eISSN: 1996-756X
Languages: English-Great Britain (EN-GB)
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Abstract
This paper proposes a method used to improve the performance of the digital watermarking based on the modification in the blue channel of the image pixels. The main objective is to reduce the error prediction caused by the high different values of neighbor pixels. We use 5x5 Gaussian Low Pass Filter in the embedding side and then the edge detection technique takes place in order to find out the high different values of neighbor pixels, so that on the embedding side, the watermark bits are embedded on the low frequency components of the blue channel ignoring the edges and neighbor of 3x3 pixel positions, where in the extraction side, only the edge and its neighbor ignorance are applied. The experimental results show the improved performance in terms of average NC, compared to the previous methods. The improved robustness of our method against different types of attacks at various strengths is also presented and compared. ฉ 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
Keywords
average NC, edge detection, Gaussian Low Pass Filter, low frequency components, robustness
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