Novel approaches to image watermarking based on image bandwidth modification

Darran Specter
In this thesis, new image watermarking techniques are introduced based upon the creation of a proposed frequency ‘deadband’. The ‘deadband’ is a frequency region of zero coefficients, created at the highest frequency band of an image, where its sampling frequency is marginally increased. The creation of the zero region occurs when an image is first up-sampled by a factor L, using image interpolation, filtered (to remove base band copies and any frequency components that would...
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