US 2016/0239728 A1Published application

Method, control device and non-transitory computer-readable storage medium storing program for estimating color verification result

AssigneeKonica Minolta, Inc.

InventorNaoyo SUZUKI

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Abstract

A control device estimates a color verification result by using the following method. The method includes obtaining a first set of color values by using measurements of a color chart printed by a printer without color management; calculating second and third sets of color values based on increased color gamut and reduced color gamut of the printer due to a conditional change of the printer; creating a first to third printer-profiles by using the first to third sets of color values; calculating theoretical reference values of target color values and first to third theoretical color values by using the first to third printer-profiles; calculating first to third color differences by using the theoretical reference values and the first to third theoretical color values; obtaining an estimated result of the color verification by comparing the first to third color differences with a preset standard value; and outputting the estimated result.

Claims21

Dependent claims

A method used by a control device which performs color verification of colors printed by a printer, for estimating a result of the color verification, the color verification being judging of color reproduction accuracy of the printer, the method comprising:

causing a user to input conditions to be used for the color verification, through an input unit of the control device;
obtaining a first set of color values being measured color values of color patches of a color chart printed by the printer without color management;
calculating a second set of color values and a third set of color values, the second set of color values corresponding to the first set of color values and representing colors to be printed by the printer having a color gamut increased with a conditional change of the printer, the third set of color values corresponding to the first set of color values and representing colors to be printed by the printer having a color gamut reduced with a conditional change of the printer;
creating a first printer-profile, a second printer-profile and a third printer-profile by using the first set of color values, the second set of color values and the third set of color values;
on a basis of the conditions input by the user, calculating theoretical reference values of color values of a target of the color verification, by using a predetermined target profile;
calculating first theoretical color values, second theoretical color values and third theoretical color values from the theoretical reference values by using the first to third printer-profiles;
obtaining an estimated result of the color verification on a basis of comparison between a preset standard value and each of first to third color differences, the first to third color difference each representing a difference between the theoretical reference values and corresponding one of the first theoretical color values, the second theoretical color values and the third theoretical color values;
and
outputting the estimated result through the output unit of the control device.

6 more elements

A control device which performs color verification of colors printed by a printer, where the color verification is judging of color reproduction accuracy of the printer, the control device comprising:

an input unit;
an output unit;
and
an estimation section that estimates a result of color verification and performs following processing including causing a user to input conditions to be used for the color verification, through the input unit,
obtaining a first set of color values being measured color values of color patches of a color chart printed by the printer without color management,
calculating a second set of color values and a third set of color values, the second set of color values corresponding to the first set of color values and representing colors to be printed by the printer having a color gamut increased with a conditional change of the printer, the third set of color values corresponding to the first set of color values and representing colors to be printed by the printer having a color gamut reduced with a conditional change of the printer,
creating a first printer-profile, a second printer-profile and a third printer-profile by using the first set of color values, the second set of color values and the third set of color values,
on a basis of the conditions input by the user, calculating theoretical reference values of color values of a target of the color verification, by using a predetermined target profile,
calculating first theoretical color values, second theoretical color values and third theoretical color values from the theoretical reference values by using the first to third printer-profiles,
obtaining an estimated result of the color verification on a basis of comparison between a preset standard value and each of first to third color differences, the first to third color difference each representing a difference between the theoretical reference values and corresponding one of the first theoretical color values, the second theoretical color values and the third theoretical color values, and
outputting the estimated result through the output unit.

8 more elements

A non-transitory computer-readable storage medium storing a program to be executed by a control device which performs color verification of colors printed by a printer, for estimating a result of the color verification, the color verification being judging of color reproduction accuracy of the printer, the program, when executed by a processor of the control device, causing the control device to perform processing comprising:

causing a user to input conditions to be used for the color verification, through an input unit of the control device;
obtaining a first set of color values being measured color values of color patches of a color chart printed by the printer without color management;
calculating a second set of color values and a third set of color values, the second set of color values corresponding to the first set of color values and representing colors to be printed by the printer having a color gamut increased with a conditional change of the printer, the third set of color values corresponding to the first set of color values and representing colors to be printed by the printer having a color gamut reduced with a conditional change of the printer,
creating a first printer-profile, a second printer-profile and a third printer-profile by using the first set of color values, the second set of color values and the third set of color values;
on a basis of the conditions input by the user, calculating theoretical reference values of color values of a target of the color verification, by using a predetermined target profile;
calculating first theoretical color values, second theoretical color values and third theoretical color values from the theoretical reference values by using the first to third printer-profiles;
obtaining an estimated result of the color verification on a basis of comparison between a preset standard value and each of first to third color differences, the first to third color difference each representing a difference between the theoretical reference values and corresponding one of the first theoretical color values, the second theoretical color values and the third theoretical color values;
and
outputting the estimated result through the output unit of the control device.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/040,759Filed 10 Feb 2016
Priority: JP 2015-02842817 Feb 2015
Published: 18 Aug 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

G06K 15/027
Using printers: test patterns and calibration
G06F 3/1208
Improving or facilitating administration, e.g. print management: resulting in improved quality of the output result, e.g. print layout, colours,…
G06F 3/1229
Specifically adapted to use a particular technique: printer resources management or printer maintenance, e.g. device status, power levels
G06K 15/1868
Post-processing of the composed and rasterized print image: for fitting to an output condition, e.g. paper colour or format