Randomization of the Fourier transform.
We have investigated the multiplicity and complexity in eigenvalues of the fractional Fourier transform and found that the ambiguity of the eigenvalues may indicate randomness. We have therefore proposed a method to randomize the Fourier transform. Such a random Fourier transform can be applied in the field of image encryption and decryption.
Liu
Zhengjun
Z
Department of Physics, Harbin Institute of Technology, Harbin, 150001 China.
Liu
Shutian
S
D005583:Fourier Analysis; D007091:Image Processing, Computer-Assisted; D015233:Models, Statistical; D008962:Models, Theoretical; D016011:Normal Distribution; D055095:Optics and Photonics