S.I. Fraser and A.R. Allen (UK)
Watermarking Techniques, Digital Image Watermarking,Wavelet.
A novel, quantization based method for watermarking dig ital images is presented here. This new scheme utilises im plicit visual masking by only inserting a watermark bit into wavelet coefficients of high magnitude. Also, this water marking technique is blind (i.e., neither the original un corrupted image nor any side information is required in the recovery process) as well as being very computation ally efficient. This new watermarking algorithm combines and adapts various aspects from two existing watermarking methods. Results show that the newly presented method improves upon both of these existing techniques.
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