CHARACTER FEATURE EXTRACTION METHOD, DEVICE THEREFOR, CHARACTER RECOGNITION METHOD AND DEVICE THEREFOR

摘要

PROBLEM TO BE SOLVED: To reduce the variation of the feature value of a character. ;SOLUTION: Based on a number occupied by black dots within each mesh area (30) forming a character area, the density value (X0) of each mesh area is calculated. Next each mesh density value (X0) is converted so that the average (K) of the calculated mesh density values (X0) is approximated to a prescribed corrected density value while keeping the dynamic range of the mesh density value (X0). Thereby the average density values K concerning individual characters are nearly uniform to reduce the variation of the feature values of characters to facilitate character recognition.;COPYRIGHT: (C)1997,JPO