IP Library Granted Patent US 10,554,861
Granted Patent B2
US 10,554,861 · App. 15/058,260 · Granted Feb 4, 2020

Method and device for color compensation

Inventors: Joo-young Jung (Suwon-si, KR); Hyung-jong Kang (Seoul, KR); Kyeong-man Kim (Yongin-si, KR); Jeong-hun Kim (Hwaseong-si, KR); Nam-ju Shin (Suwon-si, KR); Ho-jin Ahn (Suwon-si, KR); Hyun-soo Oh (Suwon-si, KR); Woo-jun Chung (Suwon-si, KR); Jung-mo Hong (Suwon-si, KR); In-ho Park (Yongin-si, KR)
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
H04N1/6055H04N1/6033H04N1/6036
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Quick Facts
Patent No.
US 10,554,861
App. No.
15/058,260
Granted
Feb 4, 2020
Kind
B2
Abstract

Provided is a color compensation method in an image forming apparatus. The color compensation method may include imaging a first color chart by a first image forming apparatus, scanning the imaged first color chart, comparing information regarding the scanned first color chart and information regarding a reference color chart to determine an international color consortium (ICC) profile of the first image forming apparatus, and performing color compensation on the first image forming apparatus based on the determined ICC profile.

Claims (33)

1. A color compensation method performed for a first image forming apparatus, the method comprising:

generating a color chart on a first printing medium using a first image former included in the first image forming apparatus;

scanning, by a scanner, the color chart on the first printing medium to generate a first scanned color chart;

obtaining a second scanned reference color chart by a scan, by the scanner, of a reference color chart generated on a second printing medium, the reference color chart generated on the second printing medium using a second image former included in a second image forming apparatus distinct from the first image forming apparatus and being a reference for determining a profile of the first image forming apparatus;

determining the profile of the first image forming apparatus by comparing the first scanned color chart and the second scanned reference color chart; and

performing color compensation for the first image former included in the first image forming apparatus based on the determined profile.

2. The color compensation method of claim 1 , wherein the reference color chart is a predefined color chart that is selected by a user of the first image forming apparatus.

3. The color compensation method of claim 1 , wherein the determined profile comprises an international color consortium (ICC) profile.

4. The color compensation method of claim 1 , wherein information regarding the second scanned reference color chart includes information obtained by the scanner of the first image forming apparatus scanning the reference color chart.

5. The color compensation method of claim 1 , wherein the comparing of the first scanned color chart and the second scanned reference color chart comprises comparing an attribute of the first scanned color chart and an attribute of the second scanned reference color chart.

6. The color compensation method of claim 5 , wherein the attribute of the first scanned color chart and the attribute of the second scanned reference color chart include one or more of tone, chroma, and/or brightness.

7. The color compensation method of claim 1 , wherein the comparing of the first scanned color chart and the second scanned reference color chart comprises:

transforming RGB values of the first scanned color chart and the second scanned reference color chart at a predefined position into a different color coordinate system; and

performing color information comparison on the color coordinate system.

8. The color compensation method of claim 3 , wherein the determining of the ICC profile comprises:

removing an ICC profile that is outside of a predetermined range from among a plurality of prestored ICC profiles; and

determining an ICC profile having an attribute that is within a certain range with respect to the reference color chart.

9. An image forming apparatus comprising:

an image former;

at least one computer storage medium storing computer-executable instructions; and

at least one hardware processor to execute the stored computer-executable instructions to cause:

generating a color chart on a first printing medium using the image former;

scanning, by a scanner, the color chart on the first printing medium to generate a first scanned color chart;

obtaining a second scanned reference color chart by a scan, by the scanner, of a reference color chart generated on a second printing medium, the reference color chart being imaged on the second printing medium using another image former included in another image forming apparatus distinct from the image forming apparatus and being a reference for determining a profile of the image forming apparatus;

determining the profile of the image forming apparatus by comparing the first scanned color chart and the second scanned reference color chart; and

performing color compensation for the image former of the image forming apparatus based on the determined profile.

10. The image forming apparatus of claim 9 , wherein the reference color chart is a predefined color chart that is selected by a user of the image forming apparatus.

11. The image forming apparatus of claim 9 , wherein the determined profile comprises an international color consortium (ICC) profile.

12. The image forming apparatus of claim 9 , wherein information regarding the second scanned reference color chart includes information obtained by the image forming apparatus scanning the reference color chart.

13. The image forming apparatus of claim 9 , wherein, when comparing the first scanned color chart and the second scanned reference color chart, the at least one hardware processor compares an attribute of the first scanned color chart and an attribute of the second scanned reference color chart.

14. The image forming apparatus of claim 13 , wherein the attribute of the first scanned color chart and the attribute of the second scanned reference color chart include one or more of tone, chroma, and brightness.

15. The image forming apparatus of claim 9 , wherein, when comparing the first scanned color chart and the second scanned reference color chart, the at least one hardware processor transforms RGB values of the first scanned color chart and the second scanned reference color chart at a predefined position into another color coordinate system and performs color information comparison on the transformed color coordinate system.

16. The image forming apparatus of claim 11 , wherein the at least one hardware processor is to remove an ICC profile that is outside of a predetermined range from among a plurality of prestored ICC profiles and then determines an ICC profile having an attribute that is within a certain range with respect to the reference color chart.

Assignments (7)
CONFIRMATORY ASSIGNMENT EFFECTIVE NOVEMBER 1, 2018 Recorded Oct 17, 2019
From: HP PRINTING KOREA CO., LTD.
To: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Reel/Frame 050747/0080 →
CHANGE OF LEGAL ENTITY EFFECTIVE AUG. 31, 2018 Recorded Oct 16, 2019
From: HP PRINTING KOREA CO., LTD.
To: HP PRINTING KOREA CO., LTD.
Reel/Frame 050938/0139 →
CORRECTIVE ASSIGNMENT TO CORRECT THE DOCUMENTATION EVIDENCING THE CHANGE OF NAME PREVIOUSLY RECORDED ON REEL 047370 FRAME 0405. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Recorded Nov 21, 2018
From: S-PRINTING SOLUTION CO., LTD.
To: HP PRINTING KOREA CO., LTD.
Reel/Frame 047769/0001 →
CHANGE OF NAME Recorded Aug 17, 2018
From: S-PRINTING SOLUTION CO., LTD.
To: HP PRINTING KOREA CO., LTD.
Reel/Frame 047370/0405 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 21, 2017
From: SAMSUNG ELECTRONICS CO., LTD
To: S-PRINTING SOLUTION CO., LTD.
Reel/Frame 041852/0125 →
CORRECTIVE ASSIGNMENT TO CORRECT THE THIRD ASSIGNOR'S NAME PREVIOUSLY RECORDED ON REEL 037868 FRAME 0912. ASSIGNOR(S) HEREBY CONFIRMS THE THIRD ASSIGNOR'S NAME IS KYEONG-MAN KIM. Recorded Apr 28, 2016
From: JUNG, JOO-YOUNG; KANG, HYUNG-JONG; KIM, KYEONG-MAN; KIM, JEONG-HUN; SHIN, NAM-JU; AHN, HO-JIN; OH, HYUN-SOO; CHUNG, WOO-JUN; HONG, JUNG-MO; PARK, IN-HO
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 038547/0857 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 2, 2016
From: JUNG, JOO-YOUNG; KANG, HYUNG-JONG; KIM, KEYONG-MAN; KIM, JEONG-HUN; SHIN, NAM-JU; AHN, HO-JIN; OH, HYUN-SOO; CHUNG, WOO-JUN; HONG, JUNG-MO; PARK, IN-HO
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 037868/0912 →
Priority Claims (1)
KR 10-2015-0123655 · Sep 1, 2015 · national
Continuity (2)
Provisional Application 62128561 · Mar 5, 2015
Related Publication 20160261775A1 · Sep 8, 2016