Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2000.07a
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- Pages.466-469
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- 2000
Watermarking for Digital Images Using Differences and Means of the Neighboring Wavelet Coefficients
- Kim, Hyun-Soon (Kyungpook National University) ;
- Bae, Sung-Ho (Tongmyong University of Information Technology) ;
- Yoon, Ock-Kyung (Kyungpook National University) ;
- Park, Kil-Houm (Kyungpook National University)
- Published : 2000.07.01
Abstract
In this paper, a watermarking technique for digital images is proposed. In our method, an image is 1-1eve1 wavelet transformed, and then the watermark of a binary stamp is embedded into the baseband. The watermark is embedded by inverting the polarities of the selected coefficient pairs. In the inverting process, we can increase perceptual image quality by finding means and differences of the selected neighboring coefficient pairs, and then adding values, which are inversely proportional to the differences, to the means. The experimental results show that the proposed method has good quality and is robust to JPEG lossy compression and various image processing operations.
Keywords