We propose a novel watermarking algorithm based on discrete fractional random transform. Random block selection and high amplitude selection techniques have been employed to improve the robustness of the watermarking algorithm. The imperceptibility of the watermarking is improved by adjusting the in
A discrete fractional random transform
β Scribed by Zhengjun Liu; Haifa Zhao; Shutian Liu
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 746 KB
- Volume
- 255
- Category
- Article
- ISSN
- 0030-4018
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β¦ Synopsis
We propose a discrete fractional random transform based on a generalization of the discrete fractional Fourier transform with an intrinsic randomness. Such discrete fractional random transform inheres excellent mathematical properties of the fractional Fourier transform along with some fantastic features of its own. As a primary application, the discrete fractional random transform has been used for image encryption and decryption.
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