A DCT-Based Blind Watermarking Algorithm for Vector Digital Maps

Abstract:

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This paper presented a new DCT-based watermarking algorithm for vector digital maps. A watermark bit is embedded by modifying the relationship of several high-frequency coefficients in DCT domain. To enhance data accuracy and robustness of the watermark, we proposed a Double Error Estimation method. This method allowed watermarks to be embedded when the vertices with distortion are smaller than thresholds. Experiments show that the watermarks are resilient to random noise, general geometric transformation, data scrambling and cropping. The algorithm is blind and it is easy to implement.

Info:

Periodical:

Advanced Materials Research (Volumes 179-180)

Edited by:

Garry Zhu

Pages:

1053-1058

DOI:

10.4028/www.scientific.net/AMR.179-180.1053

Citation:

X. Wang et al., "A DCT-Based Blind Watermarking Algorithm for Vector Digital Maps", Advanced Materials Research, Vols. 179-180, pp. 1053-1058, 2011

Online since:

January 2011

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Price:

$35.00

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