Patent ID: 6188790
Filing Date: 2001-02-13
Classification: G06K

Abstract:
A method of extracting characteristics of a character read by a reading unit, the method comprising the steps of:segmenting a data area of the character into a plurality of mesh areas;calculating via an algorithm, an uncorrected density with each mesh area relating to a number of elements that defined each character; andcorrecting, via a mapping, said uncorrected density of each mesh area to produce a corrected density of each mesh area such that said correction biases an average of said densities being corrected towards a single, predetermined average density, and such that the dynamic range of the corrected densities, defined as encompassing the set of all corrected densities that would, via said mapping, result from said plurality of characters, is the same as the dynamic range of the uncorrected densities, defined as encompassing the set of all uncorrected densities that would, via said algorithm, result from said plurality of characters of the corrected densities approaches a predetermined average density (C).