Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Modified LPM-Based Image Watermarking in the DCT/DFT Domain

수정된 LPM을 이용한 DCT, DFT 기반 이미지 워터마킹

  • Lee, Myung-Ho (Department of Electronics Engineering Sejong University) ;
  • Kwon, Oh-Jin (Department of Electronics Engineering Sejong University)
  • Published : 2007.07.11
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Abstract

We suggest an image watermarking algorithm. We perform the modified Log-Polar Mapping (LPM) and the DFT/DCT on the original image and embed the watermark. Binary images are used for watermarks. Watermarking strength is adaptively adjusted depend on the mapped data Experimental results show that this method is robust to JPEG and rotation distortions.

Keywords