PRN Based Watermarking Scheme for Color Images

Yıl 2006, Cilt: 5 Sayı: 10, 119 - 131, 01.12.2006

Ersin Elbaşı Ahmet M. Eskicioğlu

https://izlik.org/JA46TW74FD

Öz

Anahtar Kelimeler

-

PRN Based Watermarking Scheme for Color Images

https://izlik.org/JA46TW74FD

Öz

Dayanikli resim damgalama gorunmeyen damganin kasitli saldiri ve goruntu islemlerinden sonra damganin silinmesini oldukca zorlastiran resimlere gomulmesi islemidir. DWT ile yapilan yari-kor resim damgalama yontemi LL bantini disari atip, digger uc bandin daha onceden belirlenen basmaktan buyuk katsayilarina gomme yapilir. Damga Ortaya cikarma esnasinda ise, uc banttaki T2’den buyuk katsayilarin gercek damga ile korelasyonu hesaplanir. Bizim genisletilmis DWT algoritmamizda ayni damgayi LL ve HH bantlarina farkli katsayilar kullanarak gommekteyiz. Damga tespitinde ise damgalanmis RGB (ve saldirilmis olmasi mumkun) resim YUV resim modeline cevrilir. Luminance tabakasi DWT’ye cevrildikten sonra T2’den buyuk LL ve HH bantlari katsayilari secilir. Sonraki adimda ise toplam Z degeri hesaplanir bu katsayilar icin. Eger Z degeri T degerinden buyuk ise resim damgalanmis, aksi takdirde damgalanmamis demektir. Deney sonuclarimiz LL bantta gommek bir grup saldiriya karsi dayanikli olurken, HH banta gomme diger bir grup saldiriya karsi dayanikli olmaktadir

Anahtar Kelimeler

Yarı- Kör Resim Damgalama , DWT , LL Bant , HH Bant , Saldırılar

Kaynakça

• Caldelli R., Barni M., Bartolini F. and Piva A., (2000), “Geometric-Invariant Robust Watermarking through Constellation Matching in the Frequency Domain”, Proceedings of the 2000 International Conference on Image Processing (ICIP 2000), Vancouver, BC, Canada, September 10-13, 2000, Vancouver, Vol. II, 65-68.
• Cox I. J., Kilian J., Leighton T. and Shamoon T., (1997), “Secure Spread Spectrum Watermarking for Multimedia”, IEEE Transactions on Image Processing, 6 (12), 1673-1687.
• Dugad R., Ratakonda K., and Ahuja N., (1998), “A New Wavelet-Based Scheme for Watermarking Images”, Proceedings of 1998 International Conference on Image Processing (ICIP 1998), Chicago, IL, Vol. 2, 419-423.
• Elbasi E. and Eskicioglu A.M., (2006), “A DWT-based Robust Semi-blind Image Watermarking Algorithm Using Two Bands”, IS&T/SPIE’s 18th Symposium on Electronic Imaging, Security, Steganography, and Watermarking of Multimedia Contents VIII Conference, San Jose, CA.
• Eskicioglu A.M. and Delp E.J., (2001), “Overview of Multimedia Content Protection in Consumer Electronics Devices”, Signal Processing: Image Communication, 16 (7), 681-699.
• Eskicioglu A. M., Town J. and Delp E. J., (2003), “Security of Digital Entertainment Content from Creation to Consumption”, Signal Processing: Image Communication, Special Issue on Image Security, 18 (4), 237-262.
• Langelaar G.C. and Lagendijk R.L., (2001), “Optimal Differential Energy Watermarking of DCT Encoded Images and Video”, IEEE Transactions on Image Processing, 10 (1), 148-158.
• Lee C.H. and Lee Y.K., (1999), “An Adaptive Digital Image Watermarking Technique for Copyright Protection”, IEEE Transactions on Consumer Electronics, 45 (4), 1005-1015.
• Lin C.Y., Wu M., Bloom J.A., Cox I. J., Miller M. L. and Lui Y. M., (2001), “Rotation, Scale, and Translation Resilient Watermarking for Images”, IEEE Transactions on Image Processing, 10 (5), 767-782.
• Liu R. and Tan T., (2002), “A SVD-Based Watermarking Scheme for Protecting Rightful Ownership”, IEEE Transactions on Multimedia, 4 (1), 121-128.
• Pereira S. and Pun T., (2000), “Robust Template Matching for Affine Resistant Image Watermarks”, IEEE Transactions on Image Processing, 9 (6), 1123-1129.
• Piva A., Barni M., Bartolini F. and Cappellini V., (1997), “DCT-based Watermark Recovering without Resorting to the Uncorrupted Original Image”, Proceedings of the 1997 International Conference on Image Processing (ICIP ’97), Washington, DC, USA.
• Zhu W., Xiong Z. and Zhang Y.Q., (1999), “Multiresolution Watermarking for Images and Video”, IEEE Transactions on Circuits and Systems for Video Technology, 9 (4), 545-550.