Additive vs. image dependent DWT-DCT based watermarking

Emek, Serkan; Pazarci, Melih

Additive vs. image dependent DWT-DCT based watermarking

MULTIMEDIA CONTENT REPRESENTATION, CLASSIFICATION AND SECURITY, cilt.4105, ss.98-105, 2006 (SCI İndekslerine Giren Dergi)

Cilt numarası: 4105
Basım Tarihi: 2006
Dergi Adı: MULTIMEDIA CONTENT REPRESENTATION, CLASSIFICATION AND SECURITY
Sayfa Sayıları: ss.98-105

Özet

We compare our earlier additive and image dependent watermarking schemes for digital images and videos. Both schemes employ DWT followed by DCT. Pseudo-random watermark values are added to mid-frequency DWT-DCT coefficients in the additive scheme. In the image dependent scheme, the watermarking coefficients are modulated with original mid-frequency DWT-DCT coefficients to increase the efficiency of the watermark embedding. Schemes are compared to each other and comparison results including Stirmark 3.1 benchmark tests are presented.