78‐2: A Matrix‐Based Method of Color Correction for Metamerism Failure between LCD and OLED

Fang, Jingyu; Kim, Youn Jin

doi:10.1002/sdtp.12188

Cited by 7 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on Grassmann's laws [5], stimuli with the same chromaticities in the CIE chromaticity diagram but composed of different primary sets should not be expected to introduce color mismatch and the color-matching data should be easily transformed between different primary sets [6]. Various psychophysical studies, however, suggested the failure of color match using different primary sets [7][8][9][10][11][12][13]. Specifically, stimuli with same chromaticities but different spectra were found to have perceived color difference [7,9,11] and stimuli that were visually match using different primaries were found to have different chromaticities [8,10,12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Various psychophysical studies, however, suggested the failure of color match using different primary sets [7][8][9][10][11][12][13]. Specifically, stimuli with same chromaticities but different spectra were found to have perceived color difference [7,9,11] and stimuli that were visually match using different primaries were found to have different chromaticities [8,10,12,13]. The failure of color match using different primary sets was fundamentally caused by the failure of Grassmann's laws and the fact that the CIE chromaticity diagram does not represent the underlying cone mechanisms in the human visual system [14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Observer metamerism to display white point using different primary sets

Hu¹,

Mao²,

Luo³

2020

Opt. Express

View full text Add to dashboard Cite

Displays with different primary sets were found to introduce perceived color mismatch between stimuli that are computationally metameric and to affect the variations of the perceived color difference of metameric stimuli among observers (i.e., observer metamerism). In this study, computational analyses and psychophysical experiments were carried out to investigate the possibilities of increasing the color gamut area of a commercially available liquid crystal display (LCD) system using 16 three-primary sets, so that the perceived color difference of the white point between the system and the reference display and observer metamerism can be minimized. It was found the primary set with the peak wavelengths of 450, 525, and 665 nm was able to increase the sRGB color gamut by 72.1% in the CIE 1931 chromaticity diagram, which was found to have a strong correlation to the color volume of wide color gamut displays, while introducing the minimal color mismatch to the white point of the reference display and observer metamerism. The small white point color mismatch could be due to the similar wavelengths of the blue and green primaries in comparison to the reference display. In addition, the experiment results suggested that the CIE 2006 2°Color Matching Functions (CMFs) had better performance in characterizing the color match of the white point than the CIE 1931 2°, 1964 10°, and 2006 10°CMFs, which could be due to the fact that the stimulus used in the experiment only had a field of view (FOV) around 3.8°.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Observer metamerism to display white point using different primary sets

Hu¹,

Mao²,

Luo³

2020

Opt. Express

View full text Add to dashboard Cite

show abstract

“…The next category of studies 20,21 offers solutions for metameric failure reduction between displays with different SPD for single observers. Such approaches have similar workflows, starting with individuals to manually modify the color shown on the test display until it visually matches the color on the target display.…”

Section: Related Workmentioning

confidence: 99%

“…We built the study's dataset to be representative of cinematic applications and consistent with previous studies. 21,22 The selected colors were the cinema DCI-P3 25 color space primaries (red, green, blue), secondaries (yellow, cyan, magenta) and D65 white. 26 Table 1 shows the CIE31-2 x,y,Y coordinates for all reference color patches shown on the LaPH projector.…”

Section: Study Procedures and Physical Setupmentioning

confidence: 99%

Metameric failure assessment and reduction between RGB and laser phosphor projectors

et al. 2022

View full text Add to dashboard Cite

Metameric failure is commonly observed when different types of displays reproduce the same color, as it is defined by a colorimetry system, but the outputs do not match visually. Metameric failure is impacted by the used colorimetry system and the relation between the involved displays' spectral power distributions (SPDs). In this work, we assess the metameric failure between the upcoming types of theatrical projectors, RGB laser, and laser phosphor (LaPH) and propose a method to reduce it. Our analysis starts by evaluating the performance of existing colorimetry systems in terms of metameric failure reduction. Among the colorimetry systems tested, the CIE 2006 2° (CIE06 2°) system resulted in the least observed metameric failure for a large portion of the participants but not their absolute majority (>50%). The limited performance of existing colorimetry systems led us to questioning the feasibility of successful perceptual color matching between the two projectors. To explore and potentially rule‐out this scenario, we performed a subjective color matching experiment. The analysis of the results revealed the key role that the projectors' SPD differences play on color matching. Based on the observations of the first two studies, we propose a novel colorimetry system that reduces further than existing colorimetry the systems the metameric failure between RGB and LaPH projectors. Our proposed system is a modified version of CIE06–2° that accounts for the spectral differences of the two light sources. Evaluation showed that our solution outperforms existing colorimetry systems.

show abstract

“…Given the CMF data, it has been suggested that the CIE standard deviate observer cannot represent the variation [3], although it is still time-consuming to measure real observer's CMFs and thus obtain the real variation for a given group. Another related question is whether the standard observer is a good representative, as some work has shown that the Judd and Vos revised CMFs are better [6,7]. In these studies, they both proposed a matrix-based correction to transform the change of primary sets, which is essentially based on Grassmann's laws, to deal with observer metamerism.…”

Section: Introductionmentioning

confidence: 99%