Contourlet versus Wavelet Transform for a Robust Digital Image Watermarking Technique
نویسندگان
چکیده
In this paper, a watermarking algorithm that uses the wavelet transform with Multiple Description Coding (MDC) and Quantization Index Modulation (QIM) concepts is introduced. Also, the paper investigates the role of Contourlet Transform (CT) versus Wavelet Transform (WT) in providing robust image watermarking. Two measures are utilized in the comparison between the waveletbased and the contourlet-based methods; Peak Signal to Noise Ratio (PSNR) and Normalized Cross-Correlation (NCC). Experimental results reveal that the introduced algorithm is robust against different attacks and has good results compared to the contourlet-based algorithm. Keywords—image watermarking; discrete wavelet transform; discrete contourlet transform; multiple description coding; quantization index modulation.
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