Title :
FDCT-Based Digital Watermarking Algorithm for Gray Images
Author :
Yu, Jiang ; Li, Linsheng ; Wang, Anhong ; Tian, Qichuan
Author_Institution :
Taiyuan Univ. of Sci. & Technol., Taiyuan, China
Abstract :
Digital watermarking technology means that the hidden information is embedded in digital multimedia data by way of signal processing. In this paper, we firstly analyze the Fast Discrete Curvelet Transforms (FDCT) and Discrete Wavelet Transforms (DWT) which are usually used in image processing and figure out that DWT can not approximate optimally the image which contains the line singularity. And then a new encrypted embedded algorithm is presented based on FDCT. Based on bit-plane of gray image, the algorithm makes use of the advantage of FDCT and the watermark is encrypted by Chaotic Map and Arnold Transforms (AT) which is imbedded into the proper coefficient of FDCT. The result of our experiment shows that this algorithm is robust and transparent compared with DWT.
Keywords :
cryptography; curvelet transforms; discrete wavelet transforms; image coding; multimedia computing; watermarking; Arnold transform; FDCT based digital watermarking algorithm; chaotic map; digital multimedia data; discrete wavelet transform; encrypted embedded algorithm; fast discrete curvelet transform; gray image; hidden information; image processing; signal processing; Cryptography; Discrete cosine transforms; Discrete wavelet transforms; PSNR; Watermarking; Bit-Plane; Digital Watermarking; Encrypt; Fast Discrete Curvelet Transforms;
Conference_Titel :
Computational Aspects of Social Networks (CASoN), 2010 International Conference on
Conference_Location :
Taiyuan
Print_ISBN :
978-1-4244-8785-1
DOI :
10.1109/CASoN.2010.147
