Method and circuit for color halftoning for printer models in uniform color space

摘要

The present invention relates to a color halftoning method and circuit for a printer model in an even color space, and more particularly, to a color output device for outputting a color signal input with a natural color through an image input device in a limited color, An adder for adding a sum of the input color signals output from the color converter and the errors propagated in the neighboring pixels to form a target color; A color matching unit for matching a target color outputted from the adder with a limited color, a model matching unit for modeling the dots of the target color output from the color matching unit, In order to quantify the error caused by the overlap between the printer dot modeling unit and the printer dot, Consists of a group and the output color and a subtracter for obtaining the difference between the error of the printer output color dot model portion, the error filter for dispersing a pixel neighboring the quantification error output from the subtracter of. Therefore, there is an advantage that high-quality color-printed images can be realized by correctly evaluating and correcting color distortion errors occurring in printing in an even color space that matches human visual impressions.