To analyze the shape of the particles the data is sorted
with respect to the intermediate axis for both images. Since
the size of the intermediate axis, when sorted, will order
the particles in increasing size for both images one can
assume that the shortest and longest axes coupled to the
intermediate axis at any given level will represent a unique
particle in the sample. This assumption will not hold for all
particles. The order of the intermediate axis in the two
images will probably be somewhat varied. It is however
suggested that the size relationship between the longestand shortest axis for a given intermediate size position,
even if they are not of a unique particle, will be
representative of the shape of the particles in the aggregate
sample.