A Robust Watermarking Algorithm for Remote Sensing Image Based on DWT and DCT
In this paper It proposes a meaningful digital watermarking algorithm for remote sensing image based on DCT and DWT. At First,it scrambles the watermark image by Arnold transform to eliminate pixelsspatial correlation and enhance the robustness. As wavelet transformation has characteristics of welllocalized,time-frequency analysis and multiresolution analysis,and discrete cosine transform has better shaped effect,it then applies DWT to the host remote sensing image to get its subband HL,,and applies DCT to the selected subband. At last it adoptively embeds the watermark to the DC coefficients of the selected subband. Experiments have shown that the algorithm proposed in this paper has good invisibility,and it is well robust against JEPG compression,filtering and noise superimposed attacking.
digital watermarking remote sensing image DCT DWT Arnold scrambling
Li Lili Sun Jinguang Wang Qiang
School of Geomatics,Liaoning Technical University,Fuxin123000,China School of Electronic and Information Engineering,Liaoning Technical University,Huludao125105,China School of Information Science and Engineering,Yanshan University,Qinhuangdao066004,China
国际会议
南宁
英文
47-49
2010-12-10（万方平台首次上网日期，不代表论文的发表时间）