Color Research and Application最新文献_第2页

Color Palette Generation From Digital Images: A Review 从数字图像中生成调色板：综述

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-12-20 DOI: 10.1002/col.22975

Yafan Gao, Jinxing Liang, Jie Yang

{"title":"Color Palette Generation From Digital Images: A Review","authors":"Yafan Gao, Jinxing Liang, Jie Yang","doi":"10.1002/col.22975","DOIUrl":"https://doi.org/10.1002/col.22975","url":null,"abstract":"Color palette is a critical component of art, design, and lots of applications, providing the basis for organizing and utilizing colors to achieve specific objectives. However, generating color palettes from digital images presents unique challenges due to the complexity of colors in images. This review comprehensively investigates various techniques for generating color palettes from digital images and provides a thorough classification and discussion of these techniques from multiple perspectives. A color space must be selected to generate a color palette, and a generation method must be employed. This paper offers a concise overview of color spaces, an introduction to current palette generation methods, and an analysis of the metrics used to evaluate color differences between palettes. The review encompasses traditional manual methods and computer-aided automation methods, further categorized as histogram-based, clustering-based, and neural network-based methods. Discussion on the strengths, weaknesses, and applicability of existing methods are presented, and also opportunities for future research to enhance color palette generation from digital images are identified.","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"50 3","pages":"250-265"},"PeriodicalIF":1.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22975","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846092","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}

引用次数: 0

Shades of Feeling: How Facial Color Variations Influence Emotional and Health Perception 感情的色调：面部色彩变化如何影响情感和健康感知

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-12-17 DOI: 10.1002/col.22968

Faeze Heydari, Majid Khalili-Ardali, Ali Yoonessi

{"title":"Shades of Feeling: How Facial Color Variations Influence Emotional and Health Perception","authors":"Faeze Heydari, Majid Khalili-Ardali, Ali Yoonessi","doi":"10.1002/col.22968","DOIUrl":"https://doi.org/10.1002/col.22968","url":null,"abstract":"<div>\u0000 \u0000 This study investigated how color variations in facial expressions influence our perception of emotions and health. Participants viewed color-manipulated (CIE LAB color space) face images depicting seven emotional states and indicated their perceptions of each image's emotion and health. Our results suggest that facial color influences the perception of threat-related emotions such as anger and disgust, as well as health perception. Increasing facial redness intensified the perception of anger, while increasing yellowness and lightness heightened the perception of disgust. Lightness affected perceptions of happiness and sadness, with lighter happy faces appearing happier and lighter sad faces appearing sadder. Additionally, enhancing redness and yellowness on faces led participants to perceive them as healthier. Our findings add to the existing literature and provide important insights into the role of colors in perceiving different emotions and health. These insights may significantly impact social interaction and communication, especially in situations where facial expressions play a critical role.\u0000 </div>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"50 3","pages":"240-249"},"PeriodicalIF":1.2,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845821","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}

引用次数: 0

Development of Vividness, Blackness, Depth, and Whiteness Scales Under High Range of Luminance Levels 在高亮度水平范围下鲜艳度、黑度、深度和白度尺度的发展

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-12-11 DOI: 10.1002/col.22966

Molin Li, Yuechen Zhu, Ming Ronnier Luo

{"title":"Development of Vividness, Blackness, Depth, and Whiteness Scales Under High Range of Luminance Levels","authors":"Molin Li, Yuechen Zhu, Ming Ronnier Luo","doi":"10.1002/col.22966","DOIUrl":"https://doi.org/10.1002/col.22966","url":null,"abstract":"<div>\u0000 \u0000 Two-dimensional (2D) color appearance scales, including attributes such as whiteness, blackness, vividness, and depth, are closely aligned with our daily experiences and are thus highly sought after. This article presents a psychophysical experiment utilizing the magnitude estimation method under four levels of luminance (10, 100, 1000, and 10 000 cd/m2). Observers evaluated both traditional one-dimensional scales (brightness, colorfulness, and hue) and 2D scales (whiteness, blackness, vividness, and depth). The collected data were utilized to evaluate existing color appearance models, including CIECAM16, CAM16-UCS, V\u0000 \u0000 *\u0000 \u0000 \u0000 ab\u0000 , and D\u0000 \u0000 *\u0000 \u0000 \u0000 ab\u0000 . Subsequently, new scales derived from the CAM16-UCS model were developed to more accurately reflect the experimental data. These scales were further validated against independent data sets. The findings indicated that the scales developed from this study outperformed existing models when applied to external data sets. Moreover, Berns's scales for vividness and depth demonstrated strong predictive accuracy. Finally, four simple and accurate 2D scales are proposed.\u0000 </div>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"50 3","pages":"221-239"},"PeriodicalIF":1.2,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846159","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}

引用次数: 0

Characterization of Color Appearance of Self-Luminous Highlights Under HDR Scenes, Part I: Brightness for Neutral Stimuli HDR场景下自发光高光的色彩表征，第一部分：中性刺激的亮度

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-11-22 DOI: 10.1002/col.22965

Hongbing Wang, Minchen Wei

{"title":"Characterization of Color Appearance of Self-Luminous Highlights Under HDR Scenes, Part I: Brightness for Neutral Stimuli","authors":"Hongbing Wang, Minchen Wei","doi":"10.1002/col.22965","DOIUrl":"https://doi.org/10.1002/col.22965","url":null,"abstract":"<div>\u0000 \u0000 Color appearance characterization of stimuli is important in color science, with great efforts made to develop uniform color spaces (UCSs) and color appearance models (CAMs). These UCSs and CAMs, however, were mainly developed for stimuli with luminance below the diffuse white in a standard dynamic range (SDR) scene. This study was carefully designed to investigate the color appearance of self-luminous highlight stimuli, in terms of relative brightness, in a high dynamic range (HDR) scene, and to see whether a new model for characterizing the brightness of highlights is needed. The observer viewed a dark stimulus (Stimulus 0) and a self-luminous highlight (Stimulus 2) simultaneously under a certain diffuse white luminance level, which was an HDR scene, and adjusted the luminance of the other self-luminous highlight (Stimulus 1) so that its brightness appeared in the middle of Stimuli 0 and 2. The luminance of Stimulus 2 was designed to as high as 49 000 cd/m2, the luminance contrast between Stimulus 2 and Stimulus 0 was as high as 72 045:1, and the diffuse white luminance level was designed to between 10 and 11 000 cd/m2. The results suggested that the UCSs and CAMs adopting a power function to characterize the non-linear relationship between the relative luminance and perceived lightness (e.g., IPT, CIECAM02, and CIELAB) had much better performance to characterize the relative relationship of the lightness among the stimuli. Significant variations, however, were found among these UCSs and CAMs in characterizing the absolute magnitude of lightness and chroma, which merits further investigations.\u0000 </div>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"50 3","pages":"212-220"},"PeriodicalIF":1.2,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845957","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}

引用次数: 0

Correcting images for individual differences in color appearance 校正图像颜色外观的个体差异

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-11-07 DOI: 10.1002/col.22963

Camilla Simoncelli, Michael A. Webster

{"title":"Correcting images for individual differences in color appearance","authors":"Camilla Simoncelli, Michael A. Webster","doi":"10.1002/col.22963","DOIUrl":"https://doi.org/10.1002/col.22963","url":null,"abstract":"Individual differences are a prominent feature of normal color vision and range from variations in sensitivity to perception and color naming. Corrections for differences in spectral sensitivity are common, and there is growing interest in calibrating displays for the sensitivity of an individual observer. In contrast, few studies have explored calibrations for aspects of color appearance. We developed a technique for adjusting images based directly on an individual's hue percepts and illustrate the principle of the approach using a set of hue scaling functions measured previously for a large sample of color-normal observers (Emery et al. PNAS 2023). Colors in an image are mapped onto the average scaling function to define the hue perceived by the average “standard observer.” This hue is then mapped back to the chromaticity that would elicit the same response in any individual observer. With this correction, different observers – each looking at physically different images calibrated for their own hue percepts – should in principle agree on the perceived colors. Adjustments of this kind could be easily implemented on standard displays, because they require only measures of hue percepts and not spectral sensitivity, and could lead to greater consistency in the perception and communication about color across individuals with potentially widely different perceptual experiences of color.","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"50 2","pages":"172-186"},"PeriodicalIF":1.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22963","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455893","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}

引用次数: 0

Color collection and data analysis of classical gardens—A case study of Tang style gardens in Xi'an 古典园林色彩采集与数据分析——以西安唐式园林为例

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-11-07 DOI: 10.1002/col.22961

Yuan Liu, Yonggang Tian, Yuyi Liu, Keran Cao, Chuanyin Liu

{"title":"Color collection and data analysis of classical gardens—A case study of Tang style gardens in Xi'an","authors":"Yuan Liu, Yonggang Tian, Yuyi Liu, Keran Cao, Chuanyin Liu","doi":"10.1002/col.22961","DOIUrl":"https://doi.org/10.1002/col.22961","url":null,"abstract":"Garden color plays a key role in creating a spatial atmosphere, artistic conception and regional landscape characteristics. The Chinese classical garden has a profound traditional Chinese culture at its core, and its color collocation is a microcosm of Chinese culture. An in-depth exploration of the color matching of classical gardens is helpful for promoting the organic combination of modern urban construction needs and traditional culture. Therefore, this paper takes Tang-style gardens in Xi'an as an example and selects five typical classical gardens to study the color characteristics of garden elements, uses natural color system (NCS) to record color data from classical garden elements, establishes a color map, and quantitatively evaluates the color harmony of classical garden elements on the basis of Moon Spencer (M-S) color harmony theory. Research has revealed that the color system of Tang-style gardens in Xi'an is unique and includes 244 NCS standard colors with a wide distribution of hues. The study distinguishes between humanistic environment colors and natural environment colors that vary greatly with season, and provides a wide color range that reflects the beauty of nature. The color range of the humanistic environment appears calm and solemn, with colors having low blackness and low chromaticness in general. There is a certain difference in color harmony between natural and cultural environment colors, but the overall color harmony is good. This paper not only enriches the color theory system of Tang-style gardens but also provides a reference for promoting the scientific application of traditional urban colors in modern urban landscape construction.","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"50 3","pages":"190-211"},"PeriodicalIF":1.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845884","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}

引用次数: 0

Specification of just-noticeable color difference for 2° and 10° stimuli using different color matching functions 使用不同颜色匹配功能的2°和10°刺激的刚刚明显的色差规范

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-11-06 DOI: 10.1002/col.22962

Mengjing Zhao, Minchen Wei

{"title":"Specification of just-noticeable color difference for 2° and 10° stimuli using different color matching functions","authors":"Mengjing Zhao, Minchen Wei","doi":"10.1002/col.22962","DOIUrl":"https://doi.org/10.1002/col.22962","url":null,"abstract":"Just-noticeable color difference (JNCD) is important in color specification and characterization. The commonly referenced specification of JNCD (i.e., 0.004 or 0.0033 u′v′ unit) is thought to originate from the MacAdam ellipses, which were derived using 2° color stimuli and characterized using the CIE 1931 2° color matching functions (CMFs). However, there is no universally agreed or clear definition of JNCD. Also, such a specification is widely used in various ways based on an assumption that it is applicable regardless of the actual size of the stimuli and CMFs. In this study, an experiment using a constant stimuli method was carried out. The human observers evaluated a series pairs of test and reference stimuli, with a field of view (FOV) of 2° or 10°. The chromaticities of the test stimuli were carefully calibrated using four standard CIE CMFs (i.e., CIE 1931 2°, 1964 10°, 2006 2°, and 10° CMFs). The results suggested that the widely used specification of JNCD seems to be derived based on the one standard deviation ellipses, the use of these four CMFs has little effect on the specification, and the JNCD value for stimuli with an FOV of 10° is 0.0025–0.0027 u′v′ unit depending on the CMFs.","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"50 2","pages":"161-171"},"PeriodicalIF":1.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22962","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455838","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}

引用次数: 0

The development of the CIECAM16 and visualization of its domain and range CIECAM16的开发及其域和范围的可视化

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-10-29 DOI: 10.1002/col.22959

Cheng Gao, Kaida Xiao, Mike Pointer, Changjun Li

引用次数: 0

Individual color matching functions from cross-media color-matching experiment 跨媒体配色实验的个体配色功能

IF 1.2 3区工程技术

Color Research and Application Pub Date : 2024-10-21 DOI: 10.1002/col.22960

Che Shen, Mark D. Fairchild

引用次数: 0

Image enhancement for dichromatic vision by geometric approach in RGB color space 用 RGB 色彩空间几何方法增强图像的双色视觉效果