Novel hybrid blind digital image watermarking in Cepstrum and DCT domain
The problem of affine transform attacks refers to many watermarking algorithms. A slight change in the geometry of watermarked image can disable the decoding of embedded information; therefore the advanced watermarking methods should be robust against the above-mentioned procedures. This paper contains a description of the algorithm consisting of two complementary methods of image watermarking. The watermark is encoded in the luminance and chrominance components in the spatial and frequency domains. The decoding process takes place in the two-dimensional Cepstrum and the discrete cosine transform. The algorithm makes the watermarked image robust against the following affine attacks: scaling shearing and translation. Also the following image distortion processes like JPEG lossy compression, adding noise to the watermarked image, median filtering and majority cropping do not cause any loss of hidden information.
watermarking hiding information affine transform scaling shearing translation cropping Cepstrum DCT
Piotr Lenarczyk Zbigniew Piotrowski
Institute of Telecommunication Military University of Technology Warsaw, Poland
国际会议
南京
英文
356-361
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）