Analysis and comparison of holographic and traditional digital image watermarking in DWT domain

This paper compares holographic and traditional digital image watermarking by a watermarking algorithm in DWT domain, in which the four sub images of 1-scale wavelet transformed watermark image are embedded into the four corresponding images of 2-scales wavelet transformed host image respectively. By this watermarking algorithm, test results show that the hidden images of holographic watermarking survive geometric distortion more than the traditional one, especially cropping, and the Gaussian filter, Gaussian noise and JPEG compress resilient properties of traditional watermarking are a little better than the holographic watermarking.