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Digital Image Watermarking Using Bidimensional Empirical Mode Decomposition in Wavelet Domain

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3 Author(s)
Youngseock Lee ; Chungwoon Univ., Chungnam, South Korea ; Jihah Nah ; JongWeon Kim

In this paper a blind watermarking algorithm for digital image is presented. The proposed method operates in wavelet domain. The watermark is decomposed into 2D-IMFs(intrinsic mode functions)using BEMD (bidimensional empirical mode decomposition) which is the 2-dimensional extension of 1 dimensional empirical mode decomposition. The CDMA (code division multiple access) SS (spread spectrum) technique is applied to watermark imbedding and detection process. In watermark embedding process the each IMF of watermark is embed middle frequency subimages in wavelet domain, so subimages just include partial information about embedded watermark. By characteristics of BEMD, when the partial information of watermark is synthesized, the original watermark is reconstructed. The experimental results show that the proposed watermarking algorithm is in almost invisible difference between original image and watermarked image and moreover is robust against JPEG compression, common image processing distortions.

Published in:

Multimedia, 2009. ISM '09. 11th IEEE International Symposium on

Date of Conference:

14-16 Dec. 2009