Method and system for generating gray dot-matrix font from binary dot-matrix font

Abstract

A computer-implemented method is disclosed for transforming a binary dot-matrix font to a gray dot-matrix font. The method includes generally five steps. First, a binary dot-matrix outline shape is received, which is designed to render a binary dot-matrix character image on a binary dot-matrix display. The binary dot-matrix outline shape includes one or more curve segments. Second, the received dot-matrix outline shape and the binary dot-matrix character image that can be rendered based on the received outline shape are placed on a lattice coordinate system composed of a plurality of dots. Third, for each of the one or more curve segments, intersecting points at which the curve segment intersects with the plurality of dots in the lattice coordinate system are recorded. Fourth, an anti-aliasing operation is performed on the binary dot-matrix outline shape placed on the lattice coordinate system to obtain a target gray value for each of the dots that are intersected by the one or more curve segments. Fifth, a collection of the target gray values for all of the intersected dots are recorded as a gray dot-matrix image font.