Title :
A Blind Watermarking Algorithm for Color Image Based on Wavelet Transform and Fourier Transform
Author :
Hu, Anfeng ; Chen, Ning
Author_Institution :
Sch. of Inf. Sci. & Eng., Central South Univ., Changsha
Abstract :
A blind watermarking algorithm for color images based on DWT (discrete wavelet transform) and DFT (discrete Fourier transform) is presented in this paper. In the proposed algorithm, a color image is the host image and a meaningful binary image is the watermark to be embedded. The features of the proposed algorithm are as follows: (1) Color images other than gray images are used as host images. (2) Watermark can be achieved without host image and original watermark. (3) Security of the algorithm is enhanced by using four keys. Experimental results show the proposed algorithm has good performance in both invisibility and robustness against common image processing.
Keywords :
discrete Fourier transforms; discrete wavelet transforms; image colour analysis; watermarking; blind watermarking algorithm; color images; discrete Fourier transform; discrete wavelet transform; image processing; Color; Digital images; Discrete Fourier transforms; Discrete cosine transforms; Discrete wavelet transforms; Fourier transforms; Frequency domain analysis; Pixel; Watermarking; Wavelet transforms; Blind; DFT; DWT; security;
Conference_Titel :
Young Computer Scientists, 2008. ICYCS 2008. The 9th International Conference for
Conference_Location :
Hunan
Print_ISBN :
978-0-7695-3398-8
Electronic_ISBN :
978-0-7695-3398-8
DOI :
10.1109/ICYCS.2008.100
