Description: Watermarking files and digital watermarking command are two important applications of digital watermarking technology for military applications in. In this paper, based on fractional Fourier transform
(FRFT) digital watermarking algorithm using chirp signal as the watermark information is embedded into the image encryption fractional Fourier domain. The effective use of watermarking algorithm
FRFT embedding position and at the same time as the order of the keys, but also take advantage of the characteristics of chirp signals in fractional Fourier domain, and can easily detect the watermark, with good
Invisibility and safety, it is also highly resistant to JPEG compression and noise attacks, shear, filtering and other operations also has certain robustness.
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分数阶傅里叶变换在数字水印的军事应用研究.pdf
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