Digital Watermarking Algorithm Based on Chaos and Fourier Transform

@inproceedings{Xindan2011DigitalWA,
  title={Digital Watermarking Algorithm Based on Chaos and Fourier Transform},
  author={Gan Xin-dan},
  year={2011}
}
A digital watermarking algorithm is proposed based on chaotic map and fractional Fourier transform.Design a binary image as a watermark,and encrypt it by a chaotic map under the control of the secret key.The original digital image is fractional Fourier transformed with the chaotic sequences generated by the key,and the watermark is embedded in the phase spectrum coefficient.Finally the watermarked image can be obtained by inversely fractional Fourier transformation.The experimental results show… CONTINUE READING