Clifford algebras, Fourier transforms, and quantum mechanics

H De Bie - Mathematical Methods in the Applied Sciences, 2012 - Wiley Online Library
In this review, we give an overview of several recent generalizations of the Fourier transform,
related to either the Lie algebra or the Lie superalgebra. In the former case, one obtains …

On uncertainty principle for quaternionic linear canonical transform

KI Kou, JY Ou, J Morais - Abstract and Applied Analysis, 2013 - Wiley Online Library
We generalize the linear canonical transform (LCT) to quaternion‐valued signals, known as
the quaternionic linear canonical transform (QLCT). Using the properties of the LCT we …

Windowed linear canonical transform and its applications

KI Kou, RH Xu - Signal Processing, 2012 - Elsevier
In this paper, we generalize the windowed Fourier transform to the windowed linear
canonical transform by substituting the Fourier transform kernel with the linear canonical …

Two‐dimensional adaptive Fourier decomposition

T Qian - Mathematical Methods in the Applied Sciences, 2016 - Wiley Online Library
One‐dimensional adaptive Fourier decomposition, abbreviated as 1‐D AFD, or AFD, is an
adaptive representation of a physically realizable signal into a linear combination of …

Paley–Wiener theorems and uncertainty principles for the windowed linear canonical transform

KI Kou, RH Xu, YH Zhang - Mathematical Methods in the …, 2012 - Wiley Online Library
In a recent paper, the authors have introduced the windowed linear canonical transform and
shown its good properties together with some applications such as Poisson summation …

The class of Clifford-Fourier transforms

H De Bie, N De Schepper, F Sommen - Journal of Fourier Analysis and …, 2011 - Springer
Recently, there has been an increasing interest in the study of hypercomplex signals and
their Fourier transforms. This paper aims to study such integral transforms from general …

Phase‐based edge detection algorithms

XX Hu, KI Kou - Mathematical Methods in the Applied Sciences, 2018 - Wiley Online Library
Quaternion analytic signal is regarded as a generalization of analytic signal from 1D to 4D
space. It is defined by an original signal with its quaternion partial and total Hilbert …

Paley‐Wiener‐Type theorems for the Clifford‐Fourier transform

S Li, J Leng, M Fei - Mathematical Methods in the Applied …, 2019 - Wiley Online Library
In the framework of Clifford analysis, we consider the Paley‐Wiener type theorems for a
generalized Clifford‐Fourier transform. This Clifford‐Fourier transform is given by a similar …

Edge detection methods based on modified differential phase congruency of monogenic signal

Y Yang, KI Kou, C Zou - Multidimensional Systems and Signal Processing, 2018 - Springer
Monogenic signal is regarded as a generalization of analytic signal from one dimensional to
higher dimensional space, which has been received considerable attention in the literature …

Pitt's inequality and logarithmic uncertainty principle for the Clifford-Fourier transform

S Li, M Fei - Advances in Applied Clifford Algebras, 2023 - Springer
In this paper, we prove the sharp Pitt's inequality for a generalized Clifford-Fourier transform
which is given by a similar operator exponential as the classical Fourier transform but …