ENH: BUG9113 -- Used recommended method to recover spacing info
ENH: BUG9113 -- Used recommended method to recover spacing info

Note: http://www.itk.org/Bug/view.php?id=9113 has a pdf
of the file format and recommended method for recovering
resolution.  That's what I implemented; I don't have any
sample files that include the AXIS_x notes that specify
dimensions.

0

Change-Id: I6b3edb9d0395e17b39c5e2953b453545e88b4426

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