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A New Blind Image Watermarking of Handwritten Signatures using Low-Frequency Band DCT Coefficients

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4 Author(s)
Al-Gindy, A.N. ; Ajman Univ., Ajman, United Arab Emirates ; Al Ahmad, H. ; Tawfik, A. ; Qahwaji, R.A.

This paper deals with a new blind technique for robust image watermarking in the DCT domain. The technique is based on embedding watermark information in eight low-frequency band coefficients of the DCT sub-blocks. Single watermark has been embedded multi-times in the host image. The embedding process is based on changing the selected DCT-coefficients of the host image to odd or even values depending on the binary watermark's bit value. The proposed blind watermarking embedding has shown to be strongly robust against several attacks.

Published in:

Signal Processing and Communications, 2007. ICSPC 2007. IEEE International Conference on

Date of Conference:

24-27 Nov. 2007