A strategy toward spectral and colorimetric color reproduction using ordinary digital cameras. Issue 5 (15th April 2018)

• Record Type: Journal Article
• Authors: Maali Amiri, Morteza; Fairchild, Mark D
• Is Part Of: Color research & application. Volume 43:Issue 5(2018:Oct.)
• Page Start: 675
• Page End: 684
• Publication Date: 2018-04-15
• Subjects: Spectral reflectance recovery -- RGB non‐standard colorimetric information -- CIEXYZ tristimulus values -- camera characterization; Color -- Periodicals; 535
• DOI: 10.1002/col.22231
• Languages: English
• ISSNs: 0361-2317

Abstract

Abstract: In this work, a methodology is introduced to use ordinary digital RGB cameras for the purpose of spectral and colorimetric color reproduction. First, it is attempted to recover the spectral reflectance from RGB camera response using different approaches, among which, it is shown that weighted nonlinear regression as performed better than other approaches. After analyzing the results, it is realized that although spectrally the results are satisfactory, there is still a significant colorimetric error left, that should be addressed. Therefore, in the second part of the article, different linear and nonlinear matrix transforms are used to change the RGB camera response to CIEXYZ tristimulus values under a specific condition. It is concluded that colorimetric error of the recovery can be reduced significantly when a separate path is used for colorimetric color reproduction.