Abstract
In order to protect image copyright and anti-counterfeit authentication, digital watermarking technology arises at the historic moment. The contradiction between robustness and invisibility affects the development of watermarking technology. To solve this problem, a watermarking algorithm based on spread spectrum and DFT is proposed. The main work of this paper is as follows: firstly, image embedding watermarking: the original image is segmented into two-dimensional discrete Fourier transform, then the watermark information through sequence even spread spectrum is superimposed, and finally the image with watermark is obtained by the inverse discrete Fourier transform. Secondly, extracting watermark information: the discrete Fourier transform is applied to the blocks of the original image and the image with watermark, the spread spectrum watermark information is extracted by comparing the amplitude and the original watermark is obtained by the final solution and expansion. Finally, the simulation results show that the proposed algorithm has good performance in robustness and invisibility.
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Wen, T., Liu, W., Du, R., Xie, J. (2022). Realization and Simulation of Watermarking Algorithm Based on Spread Spectrum and DFT. In: Jin, H., Liu, C., Pathan, AS.K., Fadlullah, Z.M., Choudhury, S. (eds) Cognitive Radio Oriented Wireless Networks and Wireless Internet. CROWNCOM WiCON 2021 2021. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 427. Springer, Cham. https://doi.org/10.1007/978-3-030-98002-3_10
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DOI: https://doi.org/10.1007/978-3-030-98002-3_10
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