p-exponent and p-leaders, Part I: Negative pointwise regularity

S Jaffard, C Melot, R Leonarduzzi, H Wendt… - Physica A: Statistical …, 2016 - Elsevier
Multifractal analysis aims to characterize signals, functions, images or fields, via the
fluctuations of their local regularity along time or space, hence capturing crucial features of …

p-exponent and p-leaders, Part II: Multifractal analysis. Relations to detrended fluctuation analysis

R Leonarduzzi, H Wendt, P Abry, S Jaffard… - Physica A: Statistical …, 2016 - Elsevier
Multifractal analysis studies signals, functions, images or fields via the fluctuations of their
local regularity along time or space, which capture crucial features of their temporal/spatial …

A Bayesian framework for multivariate multifractal analysis

L Leon, H Wendt, JY Tourneret… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Multifractal analysis has become a reference tool for signal and image processing.
Grounded in the quantification of local regularity fluctuations, it has proven useful in an …

A review of univariate and multivariate multifractal analysis illustrated by the analysis of marathon runners physiological data

S Jaffard, G Saës, WB Nasr, F Palacin… - … (International Society for …, 2021 - Springer
We review the central results concerning wavelet methods in multifractal analysis, which
consists in analysis of the pointwise singularities of a signal, and we describe its recent …

Multifractal analysis of multivariate images using gamma Markov random field priors

H Wendt, S Combrexelle, Y Altmann, JY Tourneret… - SIAM Journal on Imaging …, 2018 - SIAM
Texture characterization of natural images using the mathematical framework of multifractal
analysis (MFA) enables the study of the fluctuations in the regularity of image intensity …

Bayesian estimation of the multifractality parameter for image texture using a Whittle approximation

S Combrexelle, H Wendt, N Dobigeon… - … on Image Processing, 2015 - ieeexplore.ieee.org
Texture characterization is a central element in many image processing applications.
Multifractal analysis is a useful signal and image processing tool, yet, the accurate …

Multifractality and long-range dependence of asset returns: the scaling behavior of the Markov-switching multifractal model with lognormal volatility components

R Liu, T Di Matteo, T Lux - Advances in Complex Systems, 2008 - World Scientific
In this paper, we consider daily financial data from various sources (stock market indices,
foreign exchange rates and bonds) and analyze their multiscaling properties by estimating …

Assessing cross-dependencies using bivariate multifractal analysis

H Wendt, R Leonarduzzi, P Abry, S Roux… - … , Speech and Signal …, 2018 - ieeexplore.ieee.org
Multifractal analysis, notably with its recent wavelet-leader based formulation, has nowadays
become a reference tool to characterize scale-free temporal dynamics in time series. It …

Bayesian estimation of the parameters of the bivariate multifractal spectrum

L Leon, H Wendt, JY Tourneret… - 2021 29th European …, 2021 - ieeexplore.ieee.org
Multifractal analysis is a reference tool for the analysis of data based on local regularity and
has proven useful in an increasing number of applications involving univariate data (scalar …

Multifractal characterization for bivariate data

R Leonarduzzi, P Abry, S Roux, H Wendt… - 2018 26th European …, 2018 - ieeexplore.ieee.org
Multifractal analysis is a reference tool for the analysis of data based on local regularity,
which has been proven useful in an increasing number of applications. However, in its …