falphaimage

Computes corresponding f(alpha) image from an input alpha image. The function f(alpha) describes the global regularity.

NOTE: In the FracLab graphical interface this function is associated with the alphaimage function and the spotted function.

Syntax

F = falphaimage(a,na)
[F,fs] = falphaimage(a,na)
[F,fs] = falphaimage(...,'Action')

Description

F = falphaimage(a,na) Estimates the f(alpha) image, F, of the input alpha image, a, using a specific number of bins, na. The parameter na is a positive integer which defines the discretization of a.

[F,fs] = falphaimage(a,na) Estimates f(alpha) image, F, and the f(alpha) multifractal spectrum, fs. The output fs is a structure that contains the spectrum, fs.spec and the data corresponding to the alpha bins, fs.bins

[F,fs] = falphaimage(...,'Action') Estimates f(alpha) image, F, and the f(alpha) multifractal spectrum, fs, using a specific action. The supported Actions can be choosen from the list below :

Examples

See Also

alphaimage, spotted

References

[1] J. Lévy-Véhel, P. Mignot "Multifractal segmentation of images", Fractals, Vol. 2 No. 3, (2004) 379-382.

[2] T. Stojic, I. Reljin, B. Reljin "Adaptation of multifractal analysis to segmentation of microcalcifications in digital mammograms", Physica A: Statistical Mechanics and its Applications, Vol. 367 No. 15, (2006) 494-508.