Title :
A Watermarking Algorithm for Digital Image Based on DCT and SVD
Author :
Liu, Feng ; Liu, Yangguang
Author_Institution :
Ningbo Inst. of Technol., Zhejiang Univ., Ningbo
Abstract :
In this paper, we propose a watermarking algorithm for digital image based on DCT and SVD. The algorithm can satisfy the transparence and robustness of the watermarking system very well. The experiment based on this algorithm demonstrates that the watermarking is robust to the common signal processing techniques including JEPG compressing,noise, low pass filter, median filter, contrast enhance.Experimental results show that the new watermarking scheme is more robust than the SVD methods.
Keywords :
discrete cosine transforms; image coding; singular value decomposition; watermarking; DCT; SVD; digital image; discrete cosine transform; signal processing technique; singular value decomposition; watermarking algorithm; Authentication; Digital images; Discrete cosine transforms; Discrete wavelet transforms; Fourier transforms; Image coding; Robustness; Signal processing algorithms; Space technology; Watermarking; DCT; SVD; watermark;
Conference_Titel :
Image and Signal Processing, 2008. CISP '08. Congress on
Conference_Location :
Sanya, Hainan
Print_ISBN :
978-0-7695-3119-9
DOI :
10.1109/CISP.2008.412
