Results 11 to 20 of about 250,706 (309)

Optical Hyperspectral Image Cryptosystem Based on Affine Transform and Fractional Fourier Transform [PDF]

open access: goldApplied Sciences, 2019
An encryption algorithm for hyperspectral data in fractional Fourier domain is designed. Firstly, the original hyperspectral image is separated into single bands and then each pair of bands are regarded as the real and imaginary part of a complex ...
Hang Chen   +3 more
doaj   +2 more sources

FRACTIONAL WAVELET TRANSFORM PHASE FOR IRIS IMAGE KEY POINTS MATCHING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
In this article the fractional phase congruency method for iris image key points descriptors is proposed. The fractional phase congruency is calculated using fractional wavelet transform through the fractional Fourier transform.
M. A. Protsenko, E. A. Pavelyeva
doaj   +1 more source

Fractional Fourier Transform [PDF]

open access: yes2001 European Control Conference (ECC), 2010
Chapter ...
Ozaktas, Haldun M.   +2 more
openaire   +6 more sources

Fractional Fourier Transform: Main Properties and Inequalities

open access: yesMathematics, 2023
The fractional Fourier transform is a natural generalization of the Fourier transform. In this work, we recall the definition of the fractional Fourier transform and its relation to the conventional Fourier transform.
Mawardi Bahri   +1 more
doaj   +1 more source

Quantum Weighted Fractional Fourier Transform

open access: yesMathematics, 2022
Quantum Fourier transform (QFT) is an important part of many quantum algorithms. However, there are few reports on quantum fractional Fourier transform (QFRFT).
Tieyu Zhao, Tianyu Yang, Yingying Chi
doaj   +1 more source

Multiweighted-Type Fractional Fourier Transform: Unitarity

open access: yesFractal and Fractional, 2021
The definition of the discrete fractional Fourier transform (DFRFT) varies, and the multiweighted-type fractional Fourier transform (M-WFRFT) is its extended definition. It is not easy to prove its unitarity.
Tieyu Zhao, Yingying Chi
doaj   +1 more source

The discrete fractional Fourier transform [PDF]

open access: yesIEEE Transactions on Signal Processing, 1999
We propose and consolidate a definition of the discrete fractional Fourier transform that generalizes the discrete Fourier transform (DFT) in the same sense that the continuous fractional Fourier transform generalizes the continuous ordinary Fourier transform.
Candan, C., Kutay, M. A., Ozaktas, H. M.
openaire   +7 more sources

Solving Generalized Heat and Generalized Laplace Equations Using Fractional Fourier Transform

open access: yesFractal and Fractional, 2023
In the present work, the main objective is to find the solution of the generalized heat and generalized Laplace equations using the fractional Fourier transform, which is a general form of the solution of the heat equation and Laplace equation using the ...
Sri Sulasteri   +4 more
doaj   +1 more source

The Fractional Clifford-Fourier Transform [PDF]

open access: yesComplex Analysis and Operator Theory, 2012
17 pages, accepted for publication in Complex Anal.
De Bie, Hendrik, De Schepper, Nele
openaire   +4 more sources

Circuit of Quantum Fractional Fourier Transform

open access: yesFractal and Fractional, 2023
In this paper, we first use the quantum Fourier transform (QFT) and quantum phase estimation (QPE) to realize the quantum fractional Fourier transform (QFrFT).
Tieyu Zhao, Yingying Chi
doaj   +1 more source

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