Browsing by Author "Papamarcou, Adrian"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item A Relationship between Quantization and Distribution Rates of Digitally Fingerprinted Data(2000) Karakos, Damianos; Papamarcou, Adrian; ISRThis paper considers a fingerprinting system where$2^{n R_W}$ distinct Gaussian fingerprints are embedded inrespective copies of an $n$-dimensional i.i.d. Gaussian image.Copies are distributed to customers in digital form, using$R_Q$ bits per image dimension.By means of a coding theorem, a rate regionfor the pair $(R_Q, R_W)$ is established such that (i) theaverage quadratic distortion between the original imageand each distributed copy does not exceed a specified level;and (ii) the error probability in decoding the embedded fingerprintin the distributed copy approaches zero asymptotically in $n$.Item A Relationship Between Quantization and Watermarking Rates in the Presence of Gaussian Attacks(2001) Karakos, Damianos; Papamarcou, Adrian; ISRA system which embeds watermarksin n-dimensional i.i.d. Gaussian images and distributesthem in compressed form is studied.The performance of the system in the presence of Gaussianattacks is considered, and the region of achievablewatermarking and quantization rates is establishedunder constraints on image distortion and watermark detectability.The performance of related schemes is also discussed.