Color Research and Application最新文献

{"title":"Educational simulations of spectral color dispersion in negative index prisms","authors":"Francisco L. Naranjo-Correa,&nbsp;Guadalupe Martínez-Borreguero","doi":"10.1002/col.22898","DOIUrl":"10.1002/col.22898","url":null,"abstract":"<p>Using a free, open-source ray-tracing program, photorealistic spectral images have been created to show how several prisms would appear in the real world if they were made with materials that have a negative index of refraction (metamaterials). The aim of this work is to provide students with a visual interpretation of the atypical behavior of negative-index materials and a look at dispersion in the visible range in such prisms, resulting in educationally valuable outcomes.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 1","pages":"163-176"},"PeriodicalIF":1.4,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135396863","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":"Relationship between color appearance evaluation and categorical color responses of small stimuli in central and near peripheral visual fields","authors":"Shuichi Mogi,&nbsp;Masafumi Kamei,&nbsp;Masato Sakurai,&nbsp;Tomoharu Ishikawa,&nbsp;Miyoshi Ayama","doi":"10.1002/col.22890","DOIUrl":"https://doi.org/10.1002/col.22890","url":null,"abstract":"<p>The appearance of color stimuli can be measured psychophysically using two major techniques: (1) elementary color naming and (2) categorical color naming. On the relation between the two naming techniques, a network model (published 20 years ago) autonomously labels colors without retrieving color names from a database and has the flexibility to adapt to individual differences or observing environments. However, this network model has not been recently applied in this context as few works have focused on two types of color naming experiments using the same observers and conditions, mainly because most studies focused either on continuous changes in color appearance or on categorical color perception and did not need to employ both techniques. In our previous study, new datasets of hue and saturation judgments with whiteness and blackness evaluations were obtained. The evaluation of these datasets included elementary color naming and categorical color naming using 11 basic color terms (BCTs) with 0.5°-diameter stimuli presented at the center and 12 locations along the horizontal and vertical meridians in the visual field for three observers. The feasibility of applying the model to our new datasets in the center and near periphery has to be examined before utilizing the model for various applications. Gain factor values for each categorical color response (CCR) were individually optimized, and the same combination of gain factors were used for all locations for each observer. The results of the chi-square goodness-of-fit test indicated that the response distribution estimated by the model (color names and “undefined”) was not significantly different from the experimental data obtained in 35 out of 39 conditions. The overall average of the correct estimation was 77%. The high estimation obtained from the same gain factor values is indicative of an invariant relationship between the two naming techniques, with up to 20° eccentricity. It also shows the model's plausibility in explaining individual differences among normal observers.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"48 6","pages":"772-792"},"PeriodicalIF":1.4,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50131954","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":"An investigation of color difference for binocular rivalry and a preliminary rivalry metric, ΔE*bino","authors":"Yuta Asano,&nbsp;Minqi Wang","doi":"10.1002/col.22900","DOIUrl":"10.1002/col.22900","url":null,"abstract":"<p>Head-mounted displays (HMDs) for virtual and augmented reality applications could have severe nonuniformities due to complex optical components and the choice of light source technologies. In addition, module variations between the two eyes can result in different colors being seen with the left and right eyes. Binocular rivalry is expected for large color differences between the two eyes, which can severely affect product usability. Thus, it is important to characterize and predict the binocular rivalry in HMDs caused by interocular color differences. As a step toward this end, we propose the first binocular color difference metric, Δ<i>E</i>*_bino, to predict the just noticeable binocular rivalry for a pair of solid colors. A psychophysical experiment was conducted using Meta Quest 2, in which we presented different colors to the left and right eye. The collected data were analyzed to derive the metric using ROC curves. We show that the Δ<i>E</i>*_bino metric showed significant improvements over conventional color difference formulae. Both the Δ<i>E</i>*_bino formula and the anonymized experiment results are available for download.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 1","pages":"51-64"},"PeriodicalIF":1.4,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127096001","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":"Quantifying basic colors' salience from cross-linguistic corpora","authors":"Antoni Brosa-Rodríguez,&nbsp;M. Dolores Jiménez-López","doi":"10.1002/col.22899","DOIUrl":"10.1002/col.22899","url":null,"abstract":"<p>A corpus-based quantitative assessment of Berlin and Kay's proposal is presented. We refine the Basic Color Terms hierarchy proposed by Berlin and Kay, through the concept of salience. A cross-linguistic study with 57 different languages and 136 different linguistic corpora has been conducted. This study uses KonText tool and the corpora included in it. The color labels in different languages have been obtained using a unified methodology from PanLex. We have obtained an individual hierarchy for each of the languages analyzed, as well as a general hierarchy that captures the universal trend. Results show that there is a close relationship between the evolutionary stages in the Berlin and Kay proposal and their frequency in our corpora study, which we could also relate to Zipf's Law. The only color that we certify behaves differently compared to such a proposal is <i>yellow</i>. The main advantage of our approach compared to previous corpora studies is taking into account the anglocentric bias by using a representative typological set of different languages from the world.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 1","pages":"34-50"},"PeriodicalIF":1.4,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22899","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127835904","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":"Color in modern architecture of Olivetti's town","authors":"Enrico Giacopelli,&nbsp;Sabrina Gualtieri,&nbsp;Marco Zerbinatti","doi":"10.1002/col.22893","DOIUrl":"10.1002/col.22893","url":null,"abstract":"<p>Ivrea is a small city known throughout the world as the home of the Olivetti company. For many years, the innovative urban and architectural experiment inspired and supported by Adriano Olivetti, financed by his company for a large part of the twentieth century, was less well known internationally. His patronage and his far-sighted vision for urban society  have produced results of great relevance in the history of Italian industrialization and Modern Architecture. Since 2018, the architectural assets, the archives, cultural heritage and social experiments, have become part of the UNESCO Catalogue of World Heritage Sites (Ivrea, industrial city of the 20th century). Today, many of these heritage buildings, characterized by external surfaces decorated with colored tiles of different types, have several conservation problems, due in many cases to the lack of ordinary maintenance. At the same time, the unavailability of original materials makes the planning of appropriate intervention solutions for maintenance and restoration difficult. This report intends to give an account of this event through two convergent approaches: (i) on the level of method, continually seeking a precise analysis of the materials, trying to refrain from the image of an ‘Olivetti's architecture’ flattened only on rationalist models—chromatically limited—to do justice to a less minimalist vision that has characterized the architectural heritage on matter since its inception; (ii) on the operative level, giving an account of the attempts to recover and restore that “world of colours” that is the Olivetti's city, also with a correct lexical reading of the architectural elements and the finding of materials (an operation declined toward “what can be done today”, given that many original products are unavailable and manufacturers are no longer in activity).</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"49 1","pages":"144-162"},"PeriodicalIF":1.4,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122445509","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":"Warm and cool reheated","authors":"Kenneth Knoblauch,&nbsp;John S. Werner,&nbsp;Michael A. Webster","doi":"10.1002/col.22892","DOIUrl":"https://doi.org/10.1002/col.22892","url":null,"abstract":"<p>Among more conventional perceptual attributes, such as hue brightness and saturation, color is universally assigned a value along a warm/cool dimension. The source of this aspect of color experience is uncertain and a subject of current debate in color science. An unpublished study from the late twentieth century has recently appeared in an online archive that makes publicly available the results of an extensive set of measurements that document the variation of warm/cool values throughout color space and shows that they relate simply to the sum of the red-green and blue-yellow opponent-color activations (red+yellow vs. blue+green), which the authors suggest is consistent with a sensory basis for this distinction.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"48 6","pages":"814-817"},"PeriodicalIF":1.4,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22892","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50147445","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":"From the editor of special issue on environmental color design","authors":"Verena M. Schindler","doi":"10.1002/col.22889","DOIUrl":"https://doi.org/10.1002/col.22889","url":null,"abstract":"","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"48 5","pages":"411-412"},"PeriodicalIF":1.4,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/col.22889","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50141656","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 effect of lightness, chroma, and hue on depth perception","authors":"Shi-Min Gong,&nbsp;Fan-Yu Liou,&nbsp;Wen-Yuan Lee","doi":"10.1002/col.22894","DOIUrl":"https://doi.org/10.1002/col.22894","url":null,"abstract":"<p>Color coding of the graphical user interface (GUI) is effective in cognitive tasks, especially searching and identifying target stimuli from a crowded GUI. The perceived color depth on a flat GUI is a critical feature in mapping the stratification of information. In color science, the visual phenomena of advancing and receding colors provide the perceived depth needed for GUI design. The experiment used a series of color pairs as experimental samples to observe the phenomenon of depth perception caused by colors and obtain the judgment of the perception of color depth. This study developed a best-fit regression model to predict the perceived color depth. The study found that the higher the lightness, the higher the chroma, and the closer the hue is to 33° (reddish color), the colors tend to be the advancing colors; the lower the lightness, the lower the chroma, and the closer the hue is to 213° (blue-greenish color), the colors tend to be the receding colors.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"48 6","pages":"793-800"},"PeriodicalIF":1.4,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50140424","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":"Flexible neural color compatibility model for efficient color extraction from image","authors":"Simin Yan,&nbsp;Shuchang Xu,&nbsp;Sanyuan Zhang","doi":"10.1002/col.22888","DOIUrl":"https://doi.org/10.1002/col.22888","url":null,"abstract":"<p>Color choice is an essential aspect of many applications, including graphic design, web design and fashion design. The selection of colors can have a significant impact on the overall aesthetic and appeal of a design, as well as its effectiveness in conveying a particular message or mood. This paper introduces new and simple tools for choosing colors. First, we introduce a convolutional neural network that scores the quality of a set of five colors, called a color theme. Such a network can be used to rate the quality of a new color theme. Second, we propose a method to extract a variable-size palette from an image. The size of the extracted palette can vary depending on the color richness of the image. Third, we demonstrate simple prototypes that apply the trained neural network and the palette extraction method to tasks in graphic design, such as improving existing themes. Our proposed network has the advantage of being significantly simpler than other state-of-the-art methods with better performance.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"48 6","pages":"761-771"},"PeriodicalIF":1.4,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50151577","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":"From photographic images to hierarchical networks―Color associations of a traditional Chinese garden","authors":"Meichen Ding,&nbsp;Jinpeng Zhang,&nbsp;Guoqiang Shen,&nbsp;Qiyang Zheng,&nbsp;Hao Yuan","doi":"10.1002/col.22886","DOIUrl":"https://doi.org/10.1002/col.22886","url":null,"abstract":"<p>The complexity of the environment and the richness of landscape color make it difficult to objectively measure color in gardens. However, with the use of machine vision and image processing algorithms, it is now possible to accurately quantify the colors of the built environment through photo recognition, classification, enhancement, and segmentation. This approach can produce correlation intensity charts and hierarchical networks that illustrate theme colors and their associations. To explore this methodology, we have selected Beijing Xiangshan Temple―a traditional Chinese garden and temple with rich landscape colors―as the research object. Using a combination of machine vision image processing technology and color clustering algorithms, we aim to establish a landscape color analysis model based on the Munsell color system and color harmony theory. Ultimately, this will provide a quantifiable and objective reference basis for the design and repair of temple garden colors, with a view to achieving the inheritance and development of classical gardens.</p>","PeriodicalId":10459,"journal":{"name":"Color Research and Application","volume":"48 6","pages":"735-747"},"PeriodicalIF":1.4,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50124420","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}