Adaptive Digital Watermarking for Copyright Protection of Images 


Vol. 27,  No. 1, pp. 89-97, Jan.  2002


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  Abstract

This paper proposes the adaptive digital watermarking method for the ownership protection of images. The watermarks are inserted to a selected area rather than a whole area. TIle proposed method reduces the distortion caused by the watermarking process. To select the regions, roughness of the image should be considered because the watermarks in the smooth regions are easily detected through the human eyes. To find the rough regions, Discrete Cosine Transform (DCT) method is used.
Generally, the high frequency regions of images are lost by the compression process such as JPEG. So, the watermarks are inserted to the low frequency regions of a selected area by using the proposed method. The proposed method reduce the image loss or distortion brought by the image processing, such as compression, filtering, scaling, addition of noise, cropping, and wavelet transform.

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  Cite this article

[IEEE Style]

K. Kim and C. Kim, "Adaptive Digital Watermarking for Copyright Protection of Images," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 1, pp. 89-97, 2002. DOI: .

[ACM Style]

Kwang-Baek Kim and Cheol-Ki Kim. 2002. Adaptive Digital Watermarking for Copyright Protection of Images. The Journal of Korean Institute of Communications and Information Sciences, 27, 1, (2002), 89-97. DOI: .

[KICS Style]

Kwang-Baek Kim and Cheol-Ki Kim, "Adaptive Digital Watermarking for Copyright Protection of Images," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 1, pp. 89-97, 1. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880