Color adjustment system and method

A print system comprising:

• a printing device to apply print material to a print target in a printing process;
• an imager for analyzing an output image of the printing device
• a processor to:
• generate a recipe vector of an recipe to a printing device, wherein the recipe is representative of a spot color in an input image, the recipe vector being based on one or more recipe color combinations of the recipe;
• generate a pixel vector of a pixel of the output image of the printing device based on one or more pixel color combinations of the pixel;
• compare the recipe vector and pixel vector to calculate a difference between the recipe and pixel;
• alter the one or more pixel color combinations of the output pixel when the difference is below a predetermined threshold, to reduce the difference so as to substantially replicate the spot color of the input image in the output image of the printing device according to the target recipe;
• and
• provide the altered pixel color combinations to the printing device.

A non-transitory computer-readable storage medium comprising a set of computer-readable instructions that, when executed by a processor of a printing system cause the processor to:

• obtain a recipe vector of a recipe to a printing device, wherein the recipe is representative of a spot color in an input image, the recipe vector being based on one or more color attributes of the recipe;
• calculate a pixel vector of a pixel of a printing device based on one or more pixel color attributes of the pixel;
• consider the recipe vector and pixel vector to determine a difference between the recipe and pixel;
• adjust the one or more pixel color attributes of the output pixel when the difference is below a predetermined threshold, to reduce the difference so as to substantially reproduce the spot color of the input image in the output of the printing device according to the target recipe;
• and
• provide the adjusted pixel color attributes to the printing device.