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» A Subband DCT Aproach to Image Watermarking
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14 years 8 months ago
A Subband DCT Aproach to Image Watermarking
A subband-DCT approach for image watermarking is proposed in this communication. The watermark is casted in a selected number of coefficients of all four bands of a one-level decom...
V.Fotopoulos and A.N.Skodras
ICIP
2002
IEEE
15 years 18 days ago
Optimal detector structure for DCT and subband domain watermarking
Most of the watermarking schemes that have been proposed until now employ a correlator in the detection stage. The current paper proposes a new detector scheme that can be applied...
Athanasios Nikolaidis, Ioannis Pitas