Delwin T. Lindsey, Angela M. Brown, Aimee N. Violette, Ryan Lange, Prutha S. Deshpande
{"title":"Color sorting and color term evolution","authors":"Delwin T. Lindsey, Angela M. Brown, Aimee N. Violette, Ryan Lange, Prutha S. Deshpande","doi":"10.1002/col.22918","DOIUrl":"10.1002/col.22918","url":null,"abstract":"<p>When participants sort color samples into piles, Boster showed that their color groupings can resemble the “stages” of Kay and McDaniel's model of color term evolution. Boster concluded that both the unfolding of color piles in a sequential color sorting task and the unfolding of color terms according to Kay and McDaniel's model reveal how human beings understand color. If this is correct, then: (1) pile sorts should be reasonably robust across variations in the palette of colors to be sorted, as long as the palette contains good examples of Berlin and Kay's universal color categories, and (2) pile-sorting should be more related to lexical effects and less related to perceptual processes governed by similarity judgments alone. We report three studies on English speakers and Somali speakers (Study 1 only), where participants sorted colors into 2…6 piles. The three studies used varying numbers of palette colors (25, 30, or 145 colors) and varying chromaticity schemes (mainly hue, widely-separated in hue and lightness, or densely distributed at high chroma). We compared human sorting behavior to Kay and McDaniel's model and to the “optimal” patterns of color sorting predicted by Regier's well-formedness statistic, which quantifies the perceived similarity between colors. Neither hypothesis is confirmed by the results of our studies. We propose that color sorts are determined by pragmatic influences based on heuristics that are inspired by the palette of colors that are available and the task that the viewer is asked to perform.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 3","pages":"318-338"},"PeriodicalIF":1.4,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22918","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of team affiliation on color-valence associations","authors":"Declan Forrester, Heather Winskel, Mitchell Longstaff","doi":"10.1002/col.22915","DOIUrl":"10.1002/col.22915","url":null,"abstract":"<p>This study aims to empirically test whether identifying as a supporter of either New South Wales (NSW) or Queensland (QLD) rugby league teams influences the extent that their respective team colors blue and maroon are associated with positively and negatively valenced words. We used a valence categorization experiment and affective rating task (valence and preference) to investigate if team affiliation and shared ingroup experience influenced affective associations with team colors. NSW supporters were faster and more accurate when categorizing positive words presented in blue than maroon font and negative words in maroon than blue font. While QLD supporters did not significantly differ when categorizing words in either blue or maroon, they rated blue and maroon equally positively in contrast to the NSW supporters. Results from this study give us greater insights into how color-valence associations can be formed through subcultural ingroup affiliations.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 3","pages":"306-317"},"PeriodicalIF":1.4,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22915","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138816445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hongying Yang, Nuoya Feng, Jingjing Zhang, Ge Zhang, Yubin Yang
{"title":"Development of an automatic conversion method for the conversion of a CIE-XYZ color system to a DIN color system","authors":"Hongying Yang, Nuoya Feng, Jingjing Zhang, Ge Zhang, Yubin Yang","doi":"10.1002/col.22916","DOIUrl":"10.1002/col.22916","url":null,"abstract":"<p>The DIN color system is a visually uniform system adopted as the standard by several countries in central Europe. Currently, the conversion method from CIE-XYZ color system to DIN color system consists of the DIN 6164 method combined with the manual reading method. However, the DIN 6164 method cannot be used for the edges of a chromaticity diagram. The manual reading method can read all areas in a chromaticity diagram; however, it is too inefficient to convert large quantities of data. This study builds on the manual reading method to create a new method entitled the program reading method. Upon comparing the relative error, absolute error and conversion times of all methods, it was determined that the program reading method achieved higher accuracy than that of the manual reading method. The maximum relative error of the program reading method was 3.24%; however, the conversion time for each sample was 0.07 s, which was 3.5 times slower than that of the DIN 6164 method. Based on these findings, this study proposes an automatic conversion method that combines the strengths of both approaches: the DIN 6164 method to be used for interpolable areas and the program reading method to be used for areas that cannot be interpolated. The automatic conversion method outlined in this study provides an efficient, precise and fast way to convert a CIE-XYZ color system to a DIN color system.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 3","pages":"292-305"},"PeriodicalIF":1.4,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138743537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Building a metric of color reproduction difference by combining multiple observers in a modular online experiment","authors":"Gregory High, Peter Nussbaum, Phil Green","doi":"10.1002/col.22913","DOIUrl":"10.1002/col.22913","url":null,"abstract":"<p>A web-hosted online experiment was previously developed to find the visual difference between four reproduction gamuts using direct magnitude estimation (Proc. IS&T 29th Color and Imaging Conf, 2021:317–322). In order to increase the size of the data set, but without overburdening observers, a modular approach was adopted. The original methodology was therefore extended across 10 linked sub-experiments to make comparisons between some 36 gamuts, which were designed to exhibit a variety of different gamut shapes, contrast ratios, and substrate colors within the constraints of a desktop display. In addition to each set of test images, a common normalization set was included in all sub-experiments in order to adjust each observer's choice of modulus to a global average observer, and thus combine the results into a larger data set. Finally, an interval scale was inferred from the normalized magnitude data using a categorical judgment approach to calculate scale values. The fitted data revealed a power function close to a square-root between the interval and magnitude scales.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 2","pages":"272-287"},"PeriodicalIF":1.4,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22913","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138559547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yash Dhote, Bilge Nazli Altay, Bruce L. Myers, Refik Telhan
{"title":"Impact of optical brightening agents on alkali-based inks in packaging: A comparative study on color accuracy","authors":"Yash Dhote, Bilge Nazli Altay, Bruce L. Myers, Refik Telhan","doi":"10.1002/col.22914","DOIUrl":"10.1002/col.22914","url":null,"abstract":"<p>Accurately assessing the color quality of printed products becomes intricate when optical brightening agents (OBAs) are introduced in papers, as diverse interactions occur among different ink pigments and papers containing OBAs due to variations in ink formulation chemistries. Specifically, alkali-based pigments, commonly used as spot colors, are carefully formulated to ensure consistency across production batches. The presence of OBAs, which absorb ultraviolet light and emit it in the visible spectrum, significantly affects color perception and accuracy on paper when interacting with these inks. This research marks an initial investigation into how OBAs in paper influence the color accuracy of five distinct alkali-based spot color paste inks using a Little Joe ink proofer. The research examines the physical, optical, and colorimetric characteristics of two paper samples-one with OBA and one without- and analyzes the colorimetric changes occurring during the ink drying process. The results indicate that reflex blue, purple, and violet spot colors achieved acceptable delta E (ΔE<sub>00</sub>) value of below 3 on non-OBA paper, with rubine red being on the borderline at 3.1 after 48 h. In contrast, purple, rhodamine red and violet achieved acceptable ΔE<sub>00</sub> below 3 on high OBA paper. The distinct behavior exhibited by certain inks led to the conclusion that achieving a consistent proofing procedure across diverse alkali-based ink formulations is impractical.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 2","pages":"258-271"},"PeriodicalIF":1.4,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22914","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138525045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analyzing the color availability of AI-generated posters based on K-means clustering: 74% orange, 38% cyan, 32% yellow, and 28% blue-cyan","authors":"Anqi Rong, Nina Hansopaheluwakan-Edward, Dian Li","doi":"10.1002/col.22912","DOIUrl":"10.1002/col.22912","url":null,"abstract":"<p>In this exploratory study, we delved deeply into the intricate interplay of color choices within AI-generated and human-designed posters, analyzing a sample of 120 instances from each category. While it is suggested that human designers may integrate cultural, emotional, and situational contexts into their creations, AI models largely base their selections on vast datasets and pattern recognition. Although AI exhibited prowess in replicating established design parameters, the study underlined the importance of critically assessing its outputs. The quantitative analysis illuminated overarching similarities in primary color selections. However, the AI's diversity in color remains less concentrated than that of human, suggesting a gap in the AI's capacity to match human expertise in color proportioning and distribution. As AI continues to evolve, it is crucial to discern its capabilities and potential limitations in the design domain, ensuring it augments human creativity rather than supplanting it. Notably, the research refrains from seeking human validation, aiming instead for an objective, data-driven reflection on the convergences and divergences between AI-generated and human designs.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 2","pages":"234-257"},"PeriodicalIF":1.4,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22912","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138525051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The brightness of chromatic stimuli","authors":"Luke Hellwig, Dale Stolitzka, Mark D. Fairchild","doi":"10.1002/col.22910","DOIUrl":"10.1002/col.22910","url":null,"abstract":"<p>We present the results of a series of three brightness-matching experiments which include a key refinement in this established psychophysical method. Constraining the chroma difference between pairs of stimuli matched in brightness allows us to use a novel calculus-based approach to building a model of the brightness of chromatic visual stimuli and the Helmholtz-Kohlrausch effect. The proposed models, compatible with the CIECAM16 color appearance model and CIELAB color space, are compared to other models of the Helmholtz-Kohlrausch effect on these data and other past brightness-matching studies. The proposed CIECAM16-based model demonstrates the overall best performance on predicting the Helmholtz-Kohlrausch effect in four newer data sets but overpredicts the weaker effect reported in three older data sets. The potential experimental factors in this divide between new and old studies are also discussed.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 1","pages":"113-123"},"PeriodicalIF":1.4,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136348323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Min Huang, Xinyuan Gao, Minchen Wei, Yu Wang, Yu Li, Xiu Li
{"title":"Effect of primary peak wavelength and stimulus size on metameric failure through color difference evaluations","authors":"Min Huang, Xinyuan Gao, Minchen Wei, Yu Wang, Yu Li, Xiu Li","doi":"10.1002/col.22909","DOIUrl":"10.1002/col.22909","url":null,"abstract":"<p>Tristimulus values and chromaticities, which are derived using the color matching functions (CMFs), are commonly used for color characterization, calibration, and specifications, with the stimuli having the same values believed to have the same color appearance (i.e., metameric match). Many studies, however, found that the stimuli having the same tristimulus values do not appear the same (known as metameric failure) due to the failure of CMFs in accurately characterizing the color matching mechanisms. Most past work investigated the performance of different CMFs through color matching experiments, with a smaller chromaticity or calculated color difference between the reference and test stimuli suggesting a better performance. Such differences, however, may not accurately characterize the performance of the CMFs, since the color spaces or chromaticity diagrams may not be uniform, in terms of the threshold of noticeable color difference. In this study, the human observers evaluated the perceived color difference between pairs of stimuli, which were calibrated to have the same tristimulus values calculated using the CIE 1931 2° CMFs, with two sizes of field of view (FOV). The results clearly suggested that the stimuli having the same tristimulus values may not always appear the same, which depended on the primaries and the FOV. More importantly, the results clearly suggested that the chromaticity differences from color matching experiments may overestimate the metameric failure, especially when the color differences were small.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 2","pages":"222-233"},"PeriodicalIF":1.4,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136346300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Special collection: Color and emotion","authors":"Domicele Jonauskaite, Christopher A. Thorstenson","doi":"10.1002/col.22911","DOIUrl":"10.1002/col.22911","url":null,"abstract":"","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 2","pages":"218-221"},"PeriodicalIF":1.4,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22911","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"CIE color coordinates for the design of luminescent glass materials","authors":"Andreia Ruivo, César Laia","doi":"10.1002/col.22907","DOIUrl":"10.1002/col.22907","url":null,"abstract":"<p>New photoluminescent materials have numerous possibilities in many different areas from technological applications to contemporary glass art and design, encouraging the development of new forms and products. Glass luminescent materials, known for their exceptional durability and recyclability, position glass as an ideal solution for fostering a more sustainable future. In recent years, white luminescence in glass and ceramics has been the subject of several investigations about its possible application in white light-emitting diodes (WLED). Color coordinates and CIE chromaticity diagrams serve as valuable tools to represent and define the range of luminescent colors achievable in a particular composition. These aid in understanding wheter a composition can be used to produce white luminescence or various other colors. In this study, a soda-lime silicate glass composition was doped with a mixture of different lanthanide oxides to increase the luminescence color palette. The same glass sample can also present different colors by changing the excitation light, allowing higher tunability of luminescent colors. It was effectively demonstrated the extensive spectrum of colors produced, which was represented through luminescence color coordinates for all synthesized glasses. Moreover, the possibility of detecting if an excited state process is occurring was studied by calculating the lanthanides factors and comparing them with those used in the glass synthesis. Nevertheless, it is shown that the energy transfer process has to be significant to influence the color coordinates and the calculation of the factors.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 1","pages":"199-214"},"PeriodicalIF":1.4,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22907","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135342281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}