“…However, monofractal is mainly a description of the overall average of the object of study, with the local characteristics of the signal being insufficiently characterized [21]. Multifractal analysis [22,23] provides the ability to describe the local characteristics of the signal in detail. By combining multifractal and detrended fluctuation analysis, a multifractal detrended fluctuation analysis (MFDFA) algorithm [24] was proposed by Kantelhardt and Zschiegner et al Since then, MFDFA has been quickly applied in a number of research areas, including market [25], temperature time series [26], seismic wave signal [27], vibration fault diagnosis [28], 2 of 13 image processing [29], etc.…”