This R package was designed by François Sémécurbe (ThéMA) and Stéphane Roux (ENS, Lyon) based on a method proposed by Herwig Wendt, Stephane Roux, Stephane Jaffard and Patrice Abry : Wavelet leaders and bootstrap for multifractal analysis of images. Signal Processing, Elsevier, 2009, 6 (89), pp. 1100-1114. Download the R package: http://cran.r-project.org/web/packages/wmlf/