Fixed a bug in Character segmentation.  Was previously comparing height to area rather than height to height.
Renamed debugImg to histoImg.  Sending the Histogram class to one of the character segmentation classees
Updated character segmenter to break blocks into smaller pieces.
Added a median (math) function to Utility
Using median character width (rather than max) to segment character blocks
Added all TopN plates to JSON formatted results
Using median calculation for charwidth/height rather than average