Document image generating apparatus, the document image generating method and a computer program

Regarding a wording including a character stored neither in character DB1 storing characters whose shapes have portions to be positioned under a base line nor in other character DB2 storing characters that are positioned to separate upward from the base line, a mean YBav calculated with bottom Y coordinates of all characters neither stored in the DB1 nor DB2 is designated as a bottom Y coordinate of wording. Regarding a wording including only characters stored in the DB1, a predetermined value is added to a mean YBav0 calculated with bottom Y coordinates of all characters for obtaining an YBav designated as a bottom Y coordinate of wording. Regarding a wording configured with only characters stored in the DB2, a predetermined value is subtracted from a mean YTav calculated with top Y coordinates of all character marks for obtaining a YBav designated as a bottom Y coordinate of wording.