Printing apparatus with dot-gain compensation using spatial filter

摘要

An apparatus and method for applying dot-gain (110) compensation to halftone bitmap files used in printing a digital halftone image. Dot-gain is added by thresholding (250) the output of a convolution of the original bitmap image with a spatial filter (200). Averaging (220) is performed to specify the level of the threshold to be applied. The level of dot-gain applied is a function of the threshold level.