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Emotional Aspects of Combination Colors by Natural Dyeing
( Eunjou Yi ),( Ju Yeon Cho ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
The aim of this study is to investigate human emotion of combination color shown by a variety of natural dyeing conditions, to extract factors of the combination colors and to figure out the effect of tone of combined two colors, combination types, and CIE color differences on emotional aspects. By various natural dyeing recipes on silk fabric, fifty different two color combination samples were prepared to be evaluated in terms of color emotional aspects by humans. The samples were tested by color experts including fashion designer, colorists, and color-related researchers in Seoul, Korea for six color emotion adjectives including ``Glamorous``, ``Comfort``, ``Dynamic``, ``Gentle``, elegant`, and ``Classic`` by employing semantic differential scales. As results, ``Glamorous``, an emotional aspect had the highest scores significantly in tones of dull, light, and soft but no difference between color combination types including ``analogous hues`` and ``contrary hues``. ``Comfort`` was the highest rated statistically for ``light``and ``pale`` as tones and for ``Analogous hues`` - combined colors. Tone ``pale``was the most strongly felt in ``Elegant`` as well as positively perceived. However ``Elegant`` was negatively evaluated as for both two types of color combination although ``Analogous hues`` got slightly higher score significantly than ``Contrary hue`` type.
Psychoacoustic Characteristics of Fibers
Yi, Eunjou,Cho, Gilsoo The Korean Fiber Society 2000 Fibers and polymers Vol.1 No.1
In order to investigate psychoacoustic characteristics of fibers, and to compare them with sound physical parameters, each sound of 25 different fabrics consisted of a single fiber such as wool, cotton, silk, polyester, and nylon was recorded. Sounds of specimens were transformed into critical band diagram and psychoacoustic characteristics including loudness and sharpness for each sound were calculated based on Zwicker's models. Physical parameters such as the level pressure of total sound (LPT), level ranges (ΔL), frequency differences (Δf), AR coefficients (ARC, ARF, ARE) were obtained in fast fourier transform (FFT) spectrum. Nylon taffeta showed higher values for loudness than 2.5 sone corresponding to human low conversation, while most silk fibers generated less louder showing lower values for loudness than 1.0 sone. Wool fibers had higher loudness mean value than that of cotton, while the two fibers didn't differ in LPT. Loudness showed high positive correlation coefficients with both LPT and ARC. Sharpness values were higher for wool fiber group than other fibers. Sharpness was not concerned with loudness, LPT, and ARC, but the fabrics with higher values for sharpness tended to show higher ΔL.
Effects of Illuminants on Subjective Fashion Images of Persimmon-Dyed Fabrics
( Eunjou Yi ) 한국감성과학회 2023 한국감성과학회 국제학술대회(ICES) Vol.2023 No.-
This study was aimed to investigate the effects of illuminants on subjective fashion image perception for fabrics. Persimmon dyeing was employed to vary color shades on a cotton fabric and some of fashion image terms including ‘Classic’, ‘Elegant’, ‘Romantic’, ‘Active’, and ‘Ethnic’ were rated by human subjects under two different standard illuminants such as D65 and CWF respectively. As results, illuminants were found as causing significant changes in feeling rates of each fashion image, which was revealed as correlated with CIE colorimetric properties such as L*, a*, b* and C*. Under D65 persimmon-dyed cotton was significantly differentiated as for fashion images. Fashion images, ‘Elegant’ and ‘Romantic’ images could be more strongly felt under D65 as for lightly toned fabrics while ‘Active’ and ‘Ethnic’ images of deeply toned ones might be perceived more under CWF. These results could be utilized in considering artificial illuminants for persimmon-dyed textile goods.
Visual Assessment of Fashion Images, Based on Persimmon-Dyed Cotton Fabric
Eunjou Yi,Shamey Renzo 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10
The aim of this study was to investigate the relationship between fashion terms and the preference for persimmon-dyed cotton fabrics, known in Korea as Galchon, against specimens` CIE colorimetric attributes, using cross-cultural psychophysical assessments involving 58 color-normal observers. Cotton fabrics were dyed with persimmon, in a range of shades, and in some cases, were also iron-mordanted. Textile and fashion students from Jeju National University in Korea and North Carolina State University in the USA participated in visual assessments to rate representative fashion terms including “Classic,” “Elegant,” “Romantic,” “Active,” and “Ethnic” using a semantic differential method. Most of the naturally dyed cotton fabrics were positively associated with the term “Classic” by both observer groups, though more strongly by the Americans. Mordanting with iron weakened the association with the terms “Elegant” and “Romantic” for both groups and the responses to these terms showed a weak negative correlation with chroma, C*. Ratings for the fashion image representing “Ethnic” negatively correlated with lightness, L*. Color preference “Like” by two groups correlated mainly with responses for “Elegant” and “Romantic.” Results provide additional data for quantification of fashion terms and preference against CIE colorimetric attributes using cross-cultural psychophysical assessments.