Stereological unfolding as implemented in this package consists in the estimation of the joint sizeshapeorientation distribution of spheroidal shaped particles based on the same measured quantities of corresponding planar vertical section profiles. A single trivariate discretized version of the (stereological) integral equation in the case of prolate and oblate spheroids is solved numerically by the EM algorithm. The estimation of diameter distribution of spheres from planar sections (Wicksell's corpuscle problem) is also implemented. Further, the package provides routines for the simulation of a Poisson germ grain process with either spheroids, spherocylinders or spheres as grains together with functions for planar sections. For the purpose of exact simulation a bivariate sizeshape distribution is implemented.
Package details 


Author  Markus Baaske [aut, cre], Felix Ballani [ctb] 
Date of publication  20161006 19:33:23 
Maintainer  Markus Baaske <markus.baaske@math.tufreiberg.de> 
License  GPL2 
Version  0.6 
Package repository  View on CRAN 
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