TY  - JOUR
TT  - Two Bands Wavelet Based Robust Semi-Blind Image  Watermarking
AU  - Elbaşı, Ersin
PY  - 2008
DA  - December
JF  - Politeknik Dergisi
PB  - Gazi Üniversitesi
WT  - DergiPark
SN  - 2147-9429
SP  - 329
EP  - 337
VL  - 11
IS  - 4
KW  - yarı-kör resim damgalama
KW  - saldırılar
KW  - gömme algoritması
KW  - dalgacık alanı
N2  - Robust image watermarking is the process of embedding an invisible watermark in an image in order to make it very difficult to remove the watermark after intentional attacks and normal audio/visual processes. A recent DWT image watermarking paper embeds a PRN sequence as a watermark in three bands, excluding the low pass subband, using coefficients that are higher than a given threshold. During watermark detection, all the coefficients higher than another threshold are chosen for correlation with the original watermark. In this paper, we extend the idea to embed the same watermark in two bands (LL and HH). Our experiments show that for one group of attacks, the correlation with the real watermark is higher than the threshold in the LL band and for another group of attacks, the correlation with the real watermark is higher than the threshold in the HH band
UR  - https://dergipark.org.tr/tr/pub/politeknik/issue//367246
L1  - https://dergipark.org.tr/tr/download/article-file/384722
ER  -