Image processing apparatus, image processing method and computer-readable storage medium with improved character display

摘要

An image processing apparatus includes a first screen processing unit that performs first screen processing using a first screen angle on a line region of a character, a second screen processing unit that performs second screen processing using a second screen angle on at least an outline region out of the line region, the second screen angle being different from the first screen angle, and a composition unit that performs composition of a processing result of the first screen processing and a processing result of the second screen processing, on at least the outline region out of the line region.

主权项

1. An image processing apparatus comprising a hardware processor configured to:
perform a first screen dither processing on an outline region of a line region of a character using a first screen angle resulting in a first screen dither processing result of pixel data; perform a second screen dither processing on the outline region on which the first screen dither processing is performed using a second screen angle resulting in a second screen dither processing result of pixel data wherein the second screen angle is different from the first screen angle; and composite the first screen dither processing result and the second screen dither processing result for the outline region of a same color plane image that has undergone the first screen dither processing and the second screen dither processing; the processor is configured to output, for only the outline region out of the line region, a value obtained by the compositing the first screen dither processing result and the second screen dither processing result, as an output gradation value, and the processor is configured to output, for an inner region enclosed by the outline region, the first screen dither processing result of the first screen dither processing as a second output gradation value.