US 2026/0161909 A1Published application

Method for correcting a colour reproduction property of a specified digital image for a proof print and/or a production print

AssigneeAkzenta Paneele + Profile GmbH

InventorsMarkus KLEMM, Timo LINNENBRÜGGER, Hans-Jürgen HANNIG

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Abstract

The present disclosure proposes a method for correcting a colour reproduction property of a proof print, wherein the proof print of a specified digital image is generated by means of a proof printer with a predefined proof print colour profile, and the proof print simulates the chromaticity of a target print, which can be generated using a production printer, of the same digital image, said method having the following steps: a) providing, in advance, a database comprising a predefined number of data pairs of starting colour value and proof printer target colour value; b) providing the digital image and dividing the digital image into a plurality of image pixels; c) determining, per image pixel, an input colour value and checking whether the database has a starting colour value for the input colour value in question; d1) if the database has a starting colour value for the input colour value in question, providing the associated proof printer target colour value; d2) if the database does not have a starting colour value for the input colour value in question, determining at least two starting colour values closest to the input colour value in question, interpolating a proof printer target colour value using the closest starting colour values, and providing the interpolated proof printer target colour value; e) creating a colour-corrected specified digital image on the basis of the provided proof printer target colour values. In this way, an improved method for correcting colour reproduction properties for a proof print is provided.

Claims15

Dependent claims

A method for correcting a color reproduction characteristic of a proof print, wherein the proof print of a specified digital image is produced by means of a proof printer with a predetermined proof print color profile, and the proof print simulates the colorfulness of a target print of the same digital image, which a production printer is capable of producing, including the following method steps:

a) providing, in advance, a database comprising a predetermined number of data pairs which include a start color value and a proof printer target color value, wherein the proof printer target color value includes a start color value corrected by means of correction data such that a proof printer target color value printed with the proof printer approximately equals a production printer target color value printed with the production printer;
b) providing the digital image and dividing the digital image into a plurality of image pixels;
c) for each image pixel, determining an input color value and checking whether the database has a start color value for the respective input color value;
d1) if the database has the start color value for the respective input color value, providing the associated proof printer target color value;
d2) if the database does not have the start color value for the respective input color value, determining at least two start color values closest to the respective input color value, interpolating a proof printer target color value based on the closest start color values, and providing the interpolated proof printer target color value;
e) creating a color-corrected specified digital image based on the provided proof printer target color values.

3 more elements

Dependencies are inferred from the claim text.