Development of digital watermarking technology to protect cadastral map information

Authors:
Jungyeop Kim;Sungeon Hong
Affiliations:
University of Missouri at Columbia, Columbia;University of Cheongju at Cheongju, ChenongJu, Korea
Venue:
Proceedings of the 2nd International Conference on Interaction Sciences: Information Technology, Culture and Human
Year:
2009

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Abstract

This research aimed to prevent, by means of digital watermarking technology, illegal distribution and reproduction of digital cadastral map information. To this end, a digital watermarking technique was developed in consideration of the properties of cadastral maps and based on watermarking methods, after which its performance was evaluated. A watermark key and a one-way function was used to compensate for the algorithm and, therefore, watermarking security, based on the existing research results. In these ways, the present research meets the requirements for fidelity, robustness, false positive rate and the maintenance of consistent topology. The advanced techniques suggested in this paper were devised so as to be suitable for vector data such as GIS and navigation data as well as cadastral maps. Moreover, if the existing methodology is further improved, it could be expected to be used even more widely.