Black extraction method using gamut boundary descriptors

Min-Ki Cho; Byoung-Ho Kang; Heui-Keun Choh

doi:10.1117/12.640907

16 January 2006 Black extraction method using gamut boundary descriptors

Min-Ki Cho, Byoung-Ho Kang, Heui-Keun Choh

Proceedings Volume 6058, Color Imaging XI: Processing, Hardcopy, and Applications; 60580O (2006) https://doi.org/10.1117/12.640907
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

Color data conversion between CMYK and CIEL*a*b* color space is not directly corresponded, that is many CMYK combinations could reproduce the same CIEL*a*b* value. When building a LUT converting from CIEL*a*b* to CMYK for a CMYK color printer, one to one correspondence between CMYK and CIEL*a*b* must be aimed. The proposed method in this paper follows steps: (1) print and measure CIEL*a*b* values of CMYK reference chart, (2) set-up parameters to assign the amount of black extraction, (3) generate gamut boundary descriptors for gamut mapping and for black extraction using CMYK-CIEL*a*b* data under predetermined black extraction parameters, (4) perform gamut mapping for given CIEL*a*b* using the gamut boundary descriptor for gamut mapping, (5) determine K value of the gamut-mapped CIEL*a*b* using the gamut boundary descriptors for black extraction. The suggested method determines K value for given CIEL*a*b* using gamut boundary descriptors in CIEL*a*b color space. As a result, a color printer using this method can make out accurate black amount and reproduces more consistent CMYK images under different black extraction options.

Citation Download Citation

Min-Ki Cho, Byoung-Ho Kang, and Heui-Keun Choh "Black extraction method using gamut boundary descriptors", Proc. SPIE 6058, Color Imaging XI: Processing, Hardcopy, and Applications, 60580O (16 January 2006); https://doi.org/10.1117/12.640907

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available