ISSN : 2319-7323

INTERNATIONAL JOURNAL OF COMPUTER SCIENCE ENGINEERING

ABSTRACT

Title	:	A Blind Watermarking Algorithm Based On DCT-DWT and ARNOLD Transform
Authors	:	Farhad Saeed, Mehdi Golestanian, Mohamadreza Azimi
Keywords	:	Digital Watermarking, DCT, DWT, ARNOLD Transform, Blind Extracting.
Issue Date	:	November 2013
Abstract	:	With the rapid development of information technology piracy is more prominent. Digital watermarking is a new technology to protect the legal owner�s copyrights. In this paper, we introduce a blind watermarking algorithm based on DCT and DWT. Using middle frequency band of DCT and 2-levels DWT provides better imperceptibility. Furthermore by using ARNOLD transformation the robustness and security of watermark image is increased. The results show that the proposed method have better performance with respect to DWT-Only method. Therefore, the proposed method has enhanced imperceptibility of watermarked image and robustness of watermark image against image processing attacks.
Page(s)	:	328-334
ISSN	:	2319-7323
Source	:	Vol. 2, No.6