Inspection apparatus and inspection method of colorimetric value

Patent metadata

Field	Value
Publication number	US-10436645-B2
Application number	US-201715805617-A
Country	US
Kind code	B2
Filing date	Nov 7, 2017
Priority date	Nov 29, 2016
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

An inspection apparatus includes a colorimetric value acquisition unit that acquires a colorimetric value of a patch positioned on a color chart, a decision unit that decides an approval status of the colorimetric value of the patch, on a basis of the colorimetric value of the patch and a reference value prepared for the patch, and a display processing unit that displays, on a display unit, a chart image simulating the color chart, and in which a color representing a patch image positioned in the chart image is displayed in a shape representing a decision result made by the decision unit.

First claim

What is claimed is:

1. An inspection apparatus comprising:
a processor configured to execute a plurality of units including
a colorimetric value acquisition unit that acquires a colorimetric value of a patch positioned on a color chart;
a decision unit that decides an approval status of the colorimetric value of the patch, on a basis of the colorimetric value of the patch and a reference value prepared for the patch; and
a display processing unit that displays, on a display unit, a chart image simulating the color chart, and in which a color representing a patch image positioned in the chart image is displayed in a shape representing a decision result made by the decision unit.

2. The inspection apparatus according to claim 1 ,
wherein the display processing unit displays, in a display region of the patch image, at least one of a first device color corresponding to the reference value in a display unit-dependent color space that depends on the display unit, and a second device color corresponding to the colorimetric value in the display unit-dependent color space.

3. The inspection apparatus according to claim 1 ,
wherein the display processing unit divides, when the decision result is a first decision out of a plurality of decisions, a display region of the patch image into an outer region and an inner region surrounded by the outer region, displays a first device color corresponding to the reference value in a display unit-dependent color space that depends on the display unit, in one of the outer region and the inner region, and displays a second device color corresponding to the colorimetric value in the display unit-dependent color space, in the other of the outer region and the inner region.

4. The inspection apparatus according to claim 1 ,
wherein the display processing unit divides, when the decision result is a second decision out of a plurality of decisions, a display region of the patch image into a first region and a second region along a line crossing the display region of the patch image, displays in the first region a first device color corresponding to the reference value in a display unit-dependent color space that depends on the display unit, and displays in the second region a second device color corresponding to the colorimetric value in the display unit-dependent color space.

5. The inspection apparatus according to claim 1 ,
wherein the display processing unit divides, when the decision result is a decision of disapproval, a display region of the patch image into a first region and a second region, displays in the first region a first device color corresponding to the reference value in a display unit-dependent color space that depends on the display unit, and displays in the second region a second device color corresponding to the colorimetric value in the display unit-dependent color space, and
displays, when the decision result is a decision of approval, a color representing the patch image in a different shape from a shape of a color representing the patch image displayed when the decision result is the decision of disapproval.

6. The inspection apparatus according to claim 1 , wherein
the processor is configured to further execute a reference value acquisition unit that converts, into the reference value, a value representing a color forming the patch in an image forming apparatus-dependent color space that depends on an image forming apparatus, according to a profile describing characteristics of colors formed by the image forming apparatus and included in the color chart.

7. The inspection apparatus according to claim 1 ,
wherein the display processing unit displays, when the decision result is a decision of approval, information indicating the decision of approval, by superposing the information on the patch image.

8. The inspection apparatus according to claim 1 ,
wherein the display processing unit displays a numerical value indicating a difference between the colorimetric value and the reference value, in a corresponding display region of the patch image.

9. An inspection apparatus comprising:
a processor configured to execute a plurality of units including
a colorimetric value acquisition unit that acquires a colorimetric value of a patch positioned on a color chart,
a decision unit that decides an approval status of the colorimetric value of the patch, on a basis of the colorimetric value of the patch and a reference value prepared for the patch, and
a display processing unit that displays, on a display unit, a chart image simulating the color chart, and displaying a patch image decided as approved by the decision unit, out of a plurality of the patch images positioned in the chart image, with information indicating the approval of the patch image such that the information is superposed on and overlapped with the approved patch image within a display region of the approved patch image.

10. An inspection method comprising:
acquiring a colorimetric value of a patch positioned on a color chart;
deciding an approval status of the colorimetric value of the patch, on a basis of the colorimetric value of the patch and a reference value prepared for the patch; and
displaying, on a display unit, a chart image simulating the color chart, and in which a color representing a patch image positioned in the chart image is displayed in a shape representing a decision result made in the deciding of the approval status.

Assignees

• Seiko Epson Corp

Inventors

• Fujino Makoto

Classifications

• H04N1/6033

  using test pattern analysis (H04N1/6055 takes precedence) · CPC title

• H04N1/6008

  with primary colour signals, e.g. RGB or CMY(K) · CPC title

• G01J2003/466

  Coded colour; Recognition of predetermined colour; Determining proximity to predetermined colour · CPC title

• G01J3/462 Primary

  Computing operations in or between colour spaces; Colour management systems · CPC title

• H04N1/6011

  with simulation on a subsidiary picture reproducer (H04N1/622 takes precedence; matching two or more picture reproducers H04N1/6052) · CPC title