A pattern classification method extracts a quantity of pattern characteristics
from a pattern classification target, registers/sets in a pattern dictionary classification
category information corresponding to the quantity of pattern characteristics,
performs pattern classification based on the quantity of pattern characteristics
and a Mahalanobis dictionary registered in the pattern dictionary, and creates
the Mahalanobis dictionary by effecting optimization processing of the pattern
dictionary based on the classification category name and the quantity of pattern characteristics.
