US 12,088,775 B2
Process for creating and for comparing color profiles
Sebastian Dicke, Bantikow (DE)
Assigned to SWISS KRONO Tec AG, Lucerne (CH)
Appl. No. 18/038,301
Filed by SWISS KRONO Tec AG, Lucerne (CH)
PCT Filed Nov. 22, 2021, PCT No. PCT/EP2021/082501
§ 371(c)(1), (2) Date May 23, 2023,
PCT Pub. No. WO2022/112173, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 20209466 (EP), filed on Nov. 24, 2020.
Prior Publication US 2024/0007581 A1, Jan. 4, 2024
Int. Cl. H04N 1/60 (2006.01)
CPC H04N 1/6097 (2013.01) [H04N 1/6008 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for comparing a reference color profile or a color space size of the reference color profile of an analog reference pattern with a decoration-specific color profile or a color space size of the decoration-specific color profile of a digital or analog decoration, wherein a color space is determined in a linear color system, wherein the method comprises the steps of:
a. reading in and storing measurement data of at least one segment of the analog reference pattern with a hyperspectral two-dimensional measuring instrument;
b. compiling the reference color profile by means of software, wherein the reference color profile comprises one or more average values of the measurement data of the at least one segment;
c. determining and storing the color space size of the reference color profile by the means of software;
d. compiling and storing the decoration-specific color profile either from digital data of a digital decoration or by hyperspectral two-dimensional measurement of at least one section of the analog decoration, wherein the decoration-specific color profile comprises the one or more average values of the measurement data of the at least one section;
e. determining and storing the color space size of the decoration-specific color profile by the means of software; and
f. comparing the color space size of the reference color profile and the color space size of the decoration-specific color profile, wherein the analog reference pattern comprises at least one color profile target and is generated by:
compiling and storing at least one digital color profile target; and
outputting the at least one digital color profile target onto a printing substrate with a digital printer under defined printing parameters.