Title :
The study of watermarking algorithm for vector geospatial data based on the phase of DFT
Author :
Xu, Dehe ; Wang, Qisheng
Author_Institution :
Inst. of Resources & Environ., North China Univ. of Water Resources & Electr. Power, Zhengzhou, China
Abstract :
Based on the theory of discrete Fourier transform (DFT) and the characteristic of vector geospatial data for digital watermarking, this paper studied the watermarking algorithm for vector geospatial data based on DFT phase. Considering the little change of DFT phase can cause the big change of original data, the autocorrelation detection is used to assist for extracting digital watermarking. The experiments show that the proposed algorithm is robust to the attack of vertex deletion, data format transformation, translation, rotation and so on.
Keywords :
Change detection algorithms; Discrete Fourier transforms; Discrete cosine transforms; Discrete wavelet transforms; Fourier transforms; Information security; Information technology; Protection; Robustness; Watermarking; Discrete Fourier Transformation (DFT); Phase; Robustness; Vector geospatial data; copyright protection; digital watermarking;
Conference_Titel :
Wireless Communications, Networking and Information Security (WCNIS), 2010 IEEE International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
978-1-4244-5850-9
DOI :
10.1109/WCINS.2010.5541855
