Brighter is Better? Investigating Spectral Color Prediction of Ink on Optically Brightened Substrate

Calabria, Anthony; Rich, Danny C.

doi:10.2352/cic.2003.11.1.art00050

Cited by 4 publications

(2 citation statements)

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“…While Calabria and Rich tested offset press sheets printed to SWOP densities and found that there was a more significant ∆E when printing on OBA brightened papers than non-brightened papers. There was a significant color difference of 3.0 in the magenta areas of these test sheets in 2003 [7].…”

Section: Statement Of Questionsmentioning

confidence: 91%

A Study of Optical Brightening Agents (OBA) Correction Methods

Tian

Chung

2010

AMR

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Almost all papers contain optical brightening agents (OBA) in process color printing. The colorimetric value shifts toward larger negative b* as the amount of OBA in paper increases. Paper containing OBA creates problems in printing conformance because colorimetric aim points of the printing standards, e.g., ISO 12647, have not been updated. To correct for the measurement differences due to OBA effect, this research printed the IT8.7/4 target on paper with and without OBA under the same printing conditions, measured with a spectrophotometer including UV, and corrected printed color produced by paper with without OBA with a linear correction per ISO 13655 as well as an experimental polynomial model via regression. The results showed that the polynomial method corrects the measurement difference between paper with and without OBA better than the linear correction method. Specifically, 90% of color differences between uncorrected data are 4.5∆E76; the linear method can correct the difference to 2.8∆E76; and the polynomial method can correct the difference to less than 1.6∆E76.

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Section: Statement Of Questionsmentioning

confidence: 91%

A Study of Optical Brightening Agents (OBA) Correction Methods

Tian

Chung

2010

AMR

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“…Paper is a typical substrate for printed color matching, which effects color appearance of printed color greatly. Especially, there is a significant color difference of different paper which contains optical brightening agents (OBA) [3][4][5]. OBA is a kind of chemical additive to correct for the natural yellow color of pulp.…”

Section: Introductionmentioning

confidence: 99%

Chromatic Adaptation Transforms to Accommodate Printed Color Matching in Paper with Optical Brightening Agents (OBA)

Tian

Liu

2012

AMM

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The color reproduction is based on visual perception. The psychophysics experiments present the light source; illuminants and view background affect the results of color matching. Paper is a typical substrate for printed color matching and effects printed color greatly. Now almost all of print papers contain optical brightening agents, which changes significantly the color appearance of printed color and makes color shifting of printed color matching. This paper used CAT02 chromatic adaptation models to transform the measurements of printed color in paper with and without OBA, compared the effect of printed color matching between before and after transforming with display, present the method using chromatic adaptation transforms to improve the accurate of printed color matching.

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Challenges in color reproduction: toward higher dimensions

Bala

2005

SPIE Proceedings

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This paper presents a short historical perspective of color reproduction technology, where we are at present, and what challenges lie ahead. Today prevalent color management systems are based on pixel-wise processing of color data represented by 3 channels. We believe this does not adequately reproduce the color experience for the user, and that additional dimensions need to be considered. Three such dimensions are discussed: spectral, spatial, and goniometric. We believe the spectral representation plays an important role in color measurement and modeling; however a spectral image representation is likely not to be a mainstream technology due to the high cost incurred, and modest benefits that are appreciated only in certain niche applications. The incorporation of spatial context is likely to be of significant immediate benefit in commercial color imaging applications. Finally, the use of goniometric information in color reproduction is in its infancy, and bears promise. A brief overview of research efforts in each area is presented.

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Brighter is Better? Investigating Spectral Color Prediction of Ink on Optically Brightened Substrate

Cited by 4 publications

References 0 publications

A Study of Optical Brightening Agents (OBA) Correction Methods

A Study of Optical Brightening Agents (OBA) Correction Methods

Chromatic Adaptation Transforms to Accommodate Printed Color Matching in Paper with Optical Brightening Agents (OBA)

Challenges in color reproduction: toward higher dimensions

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