The Study of Watermarking Algorithm for Vector Geospatial Data based on the Phase of DFT

摘要：

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.

关键词： Vector geospatial data copyright protection digital watermarking Discrete Fourier Transformation(DFT) Phase Robustness

作者: Dehe Xu Qisheng Wang

作者单位: Institute of resources and environment North China University of Water Resources and Electric Power Institute of Surveying and Mapping Information Engineering University Zhengzhou, China

会议类型: 国际会议

会议名称: 2010 IEEE International Conference Conferenhce on Wireless Communications,Networking and Information Security(2010 IEEE 无线通信、网络技术与信息安全国际会议 WCNIS)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2010-06-25（万方平台首次上网日期，不代表论文的发表时间）