Patent ID: 8005299

Claim:
An imaging apparatus comprising: an image reproduction device operative to render digital colorant combinations defined in a first colorant coordinate space; and a color transformer operative to: (a) receive a digital image including a plurality of colorant combinations defined in a second colorant coordinate space; (b) receive a printed reference image corresponding to the digital image and reproduced on a second reproduction device; (c) select one or more spatial locations in the digital image; (d) calculate, for each of the one or more selected spatial locations, a representative colorant combination; (e) measure the color of the reference image at locations corresponding to the one or more spatial locations in the digital image; (f) derive a color transform for mapping colorant combinations from the second coordinate space to a color coordinate space based on the representative colorant combinations and the corresponding measured colors; and (g) transform colorant combinations from the digital image to colorant combinations defined in the first coordinate space based in part on the color transform.