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Digital Image Watermarking Based on Exponential Form with Base of 2  

Ariunzaya, Batgerel (울산대학교)
Kim, Han-kil (울산대학교)
Chu, Hyung-Suk (파웰테크윈(주))
An, Chong-Koo (울산대학교)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.11, no.2, 2010 , pp. 97-103 More about this Journal
Abstract
In this paper, we propose a new digital watermarking technique. The main idea of the proposed algorithm relies on the assumption that any real number can be expressed as a summation of the exponential form with base of 2 and if only consider the first few summations some numbers can be expressed in the same form. Therefore, we can be sure that some amount of changes does not affect the first few summations. The algorithm decomposes a host image in wavelet domain and intensity of the significant wavelet coefficient is expressed in exponential form with base of 2. Multiple barcode watermarks are then embedded by modifying the parity of the exponent. The proposed scheme is semi-blind and also offers either objective or subjective deteew su as well. From extracted watermarks, more accurate watermark is obtained by merging technique as a final watermark. As a simulation result, the proposed algorithm could resist most cases of salt and pepper noise, Gaussian noise and JPEG compression.
Keywords
copyright protection; digital image watermarking; robust watermarking;
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Times Cited By KSCI : 1  (Citation Analysis)
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