Watermarking techniques using the Drawing Exchange Format (DXF) file

Authors:
Hwan II Kang;Kab II Kim;Seung-Soo Han
Affiliations:
Myongji Univ., Yongin Kyunggido, South Korea;Myongji Univ., Yongin Kyunggido, South Korea;Myongji Univ., Yongin Kyunggido, South Korea
Venue:
MM&Sec '01 Proceedings of the 2001 workshop on Multimedia and security: new challenges
Year:
2001

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Abstract

This paper presents an algorithm of the watermark insertion and extraction on the vector image. Most parts of the vector image consist of the array of the coordinate values. The vector watermarking method by Sakamoto et al [1] uses the mask within which all the coordinate values of all the vertices are changed depending on the value of the watermark. The proposed algorithm is the change of the vector image file instead of the change of the coordinate values on the vector image. We use the Drawing Exchange Format (DXF) files since the DXF file is one of the general files in the field of the vector image. The advantage of the proposed watermarking insertion methods is that the image after the watermarking insertion process is the same as the original vector image.