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Proceedings Paper

Watermarking of vector map based on wavelet transform
Author(s): Yuanyuan Li; Luping Xu; Zhi Chen
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Paper Abstract

An algorithm for watermarking of vector map based on discrete wavelet transform is presented in this paper. The watermarking information is represented by a bi-valued sequence. We embed the watermark repeatedly in the magnitude of the DWT coefficients vertices, which are extracted from the map. Considering the precision of the watermarked map might be violated and the map's usability might be damaged, the intensity of the watermark should be adjusted in the spatial domain until it meets the precision standard. Experiment results show that the watermark is significant but not violate the map's precision. The proposed algorithm is robust against some attacks.

Paper Details

Date Published: 25 September 2003
PDF: 6 pages
Proc. SPIE 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition, (25 September 2003); doi: 10.1117/12.538647
Show Author Affiliations
Yuanyuan Li, Xidian Univ. (China)
Luping Xu, Xidian Univ. (China)
Zhi Chen, Xidian Univ. (China)


Published in SPIE Proceedings Vol. 5286:
Third International Symposium on Multispectral Image Processing and Pattern Recognition
Hanqing Lu; Tianxu Zhang, Editor(s)

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