The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008
Figure 8. The detected watermark by noise attacking
(5) Format exchanging
If exchanging format of the embedded watermark data, the
watermark also can be detected and the result is shown in
Figure 9, where the correlative coefficient is 0.995706.
Copyright
Figure 9. The detected watermark by format exchanging
6 CONCLUSIONS
Based on integer wavelet transform, this paper proposes a
watermarking algorithm for vector geo-spatial data. The
experiments show that the proposed watermarking algorithm
can resist many attacks such as noise, data compressing, points
deleting and format exchanging. The algorithm is with good
availability, imperceptibility and robustness, so can be used to
secure the security of vector Geo-data widely.
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ACKNOWLEDGMENTS
This work was funded by 863 project: (2006AA12Z223).
