Existence of Helmholtz-Kohlrausch Effect on Images

Semin OH(오세민),Youngshin KWAK(곽영신) 한국색채학회 2015 한국색채학회 학술대회 Vol.2015 No.5

Effect of Skin Tones on Color Emotion of Lipstick Colors

Semin Oh,Hayeon Jeon,Chaeeun Lee,Arpbai Musaev,Youngshin Kwak 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10

People have different skin tones, which might arouse different color emotions even when the same lipstick colors are worn. In this study, the psychophysical experiment was carried out to investigate the effect of skin tone on the lipstick color emotion. Nine lipstick colors were reproduced on both warm and cool toned skin images on LCD display resulting in 18 test images. Ten participants evaluated each test image using a semantic differential scale with 18 adjective sets. The results showed that each color of lipstick could make specific mood no matter which skin tone is. The emotion of ‘Sexy’ was mostly connected with the Reddish colored lipsticks. Orange color could give ‘Cheerful’ and ‘Baby faced’. Coral, Nude, and Purple colors aroused ‘Pure’, ‘Intelligent’, and ‘Bold’ emotions, respectively. The skin tone was not very heavyweight on the color emotion of the lipstick colors, but still it did matter to maximize one’s intended vibe or mood. For instance, Coral, Burgundy, and Orange colors could express more ‘Pure’, ‘Mature’, and ‘Glam’, respectively, on warm toned skin than cool one. Likewise, putting Red-orange color on cool toned skin would make more ‘Characteristic’ than wearing it on the warm one.

Warm-Cool Emotions of LED Lightings around 5,000K

Semin Oh,Youngshin Kwak 한국조명·전기설비학회 2017 조명·전기설비학회논문지 Vol.31 No.8

In this study, warm-cool feelings of near-white lightings were investigated after the subjects’ eyes being adapted to 5,000K. The psychophysical experiment was carried out in a dark room using 5 channels LED lighting booth. In the experiment, total of 48 test lightings around 5,000K were generated using the booth. Total of 20 subjects evaluated warm-cool feelings of each test lighting. The results showed that lower CCT tended to have ‘Warm’ feeling, while higher CCT tended to arouse ‘Cool’ feeling. When CIECAM02 H is in the range of 0-100 and 380-400, ‘Warm’ feeling was strongly evoked and when H is in the range of 250-300, ‘Cool’ feeling was strongly aroused. Also, when test lightings have same hue, the one having higher chroma aroused stronger feeling on either ‘Warm’ or ‘Cool’. Emotion model test results showed Koo’s model, which is based on lighting colors, showed better performance than the model developed based on color patches.

The Effects of Neighboring Colors on Affectivity

Semin Oh,Youngshin Kwak 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.5

When people see a color in a daily life, people recognize the color with various neighboring colors behind, not just one color independently. So these neighboring colors can affect the affectivity. However previous researches on color affectivity are based on the single color patch experiment. The aim of this study is to investigate the effects of neighboring colors on color affectivity when seeing a color. Firstly, 10 test colors were selected. 10 test colors were distributed to cover wide color gamut. Secondly, we made 3 background conditions. One is uniform gray background and another contains saturated 24 neighboring colors and the other contains desaturated 24 neighboring colors. To evaluate affectivity, 10 adjective sets were used. Those were ‘Warm-Cool’, ‘Heavy-Light’, ‘Modern-Classic’, ‘Clean-Dirty’, ‘Active-Passive’, ‘Hard-Soft’, ‘Tense-Relaxed’, ‘Fresh-Stale’, ‘Masculine-Feminine’, ‘Like-Dislike’. The experiment was done under a viewing booth with an illuminant D65 in a dark room. Ten subjects participated in the experiment and each participant evaluated an affectivity of each test color using 7-point Likert scales. As a result, there was no strong relationship between neighboring color condition and color affectivity. It shows that the previous color affectivity results using a single color patch can be applied to the complex color condition.

A Study of Color Emotion according to Spaces and Lighting Colors

Semin Oh,Younshin KWAK(곽영신) 대한인간공학회 2016 대한인간공학회 학술대회논문집 Vol.2016 No.06

The Effects of Neighboring Colors on Affectivity

( Semin Oh ),( Youngshin Kwak ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-

When people see a color in a daily life, people recognize the color with various neighboring colors behind, not just one color independently. So these neighboring colors can affect the affectivity. However previous researches on color affectivity are based on the single color patch experiment. The aim of this study is to investigate the effects of neighboring colors on color affectivity when seeing a color. Firstly, 10 test colors were selected. 10 test colors were distributed to cover wide color gamut. Secondly, we made 3 background conditions. One is uniform gray background and another contains saturated 24 neighboring colors and the other contains desaturated 24 neighboring colors. To evaluate affectivity, 10 adjective sets were used. Those were ``Warm-Cool``, ``Heavy-Light``, ``Modern-Classic``, ``Clean-Dirty``, ``Active-Passive``, ``Hard-Soft``, ``Tense-Relaxed``, ``Fresh-Stale``, ``Masculine-Feminine``, ``Like-Dislike``. The experiment was done under a viewing booth with an illuminant D65 in a dark room. Ten subjects participated in the experiment and each participant evaluated an affectivity of each test color using 7-point Likert scales. As a result, there was no strong relationship between neighboring color condition and color affectivity. It shows that the previous color affectivity results using a single color patch can be applied to the complex color condition.

분광분포가 다른 LED 조명의 색채감성 비교

오세민(SeMin Oh),곽영신(Youngshin Kwak) 한국색채학회 2015 한국색채학회 논문집 Vol.29 No.4

LED 조명은 다양한 색상을 만들어 낼 수 있다는 특징 때문에, 조명색에 따른 감성 연구가 많이 진행되고 있다. 특히 LED 조명의 경우 동일한 색온도를 가지는 조명이라도 분광 분포의 조합에 따라 물체색도 변하게 되는데, 이는 감성에 영향을 미칠 수 있다. 본 연구에서는 조도와 색온도가 동일하고 분광분포가 다른 4종류의 조명을 이용하여 감성 평가 실험을 진행하였다. 총 30명의 실험 참가자가 22개의 테스트 컬러에 대한 감성을 평가하였다. 각 테스트 컬러에 대하여 조명의 연색성이 달라짐에 따라서 유발되는 감성의 변화를 평가하기 위해서는 ‘Warm-Cool’, ‘Heavy-Light’, ‘Modern-Classic’, ‘Clean-Dirty’, ‘Active-Passive’, ‘Hard-Soft’, ‘Tense-Relaxed’, ‘Fresh-Stale’, ‘Masculine- Feminine’, ‘Like-Dislike’ 총 10개의 감성 형용사 쌍에 대한 감성을 평가하였다. 본 연구 결과, 조명의 연색성이 변함에 따라서 CIELAB값에 변화가 있어도 그 변화의 방향으로의 두드러진 감성 변화는 일어나지 않았다. 그리고 CIELAB값 변화에 따른 감성의 변화를 관찰할 수 있었다. CIELAB hue angle에 영향을 받은 감성 형용사로는 ‘Warm-Cool"과 "Masculine-Feminine" 이 있었고, CIELAB L*에 영향을 받은 감성 형용사로는 "Heavy-Light"가 있었다. 그리고 CIELAB C*에 영향을 받은 형용사로는 ‘Heavy-Light", "Active-Passive", "Fresh-Stale"이 있었다. 기존의 색 감성 예측 모델인 Ou, Sato, Xin-Cheng 모델과 본 연구의 실험 결과를 비교해봤을 때, Ou 모델이 평균적으로 가장 높은 설명력을 가지는 것을 알 수 있었다. There have been many researches regarding color emotion because of the characteristic of LED illumination which is able to make various colors. Especially, the color of object could be changed by different spectral distribution of LED illuminations having same color temperature. In this research, the color emotion study was conducted under the 4 different lighting conditions which have same illuminance levels and color temperatures, but different spectral distributions. Total 30 people participated and each participant evaluated 22 test colors. To evaluate test colors" emotions, ten adjective sets were used and those were ‘Warm-Cool’, ‘Heavy-Light’, ‘Modern-Classic’, ‘Clean-Dirty’, ‘Active-Passive’, ‘Hard-Soft’, ‘Tense-Relaxed’, ‘Fresh-Stale’, ‘Masculine-Feminine’, ‘Like-Dislike’. Findings of the study are as follows: Though CIELAB values were changed as color rendering of illumination changed, there were no significant emotion shifts. It was found that ‘Warm-Cool" and "Masculine-Feminine" are mostly affected by CIELAB hue angle. CIELAB L* dependent adjective set was "Heavy-Light". CIELAB C* dependent adjective sets were ‘Heavy-Light", "Active-Passive", and "Fresh-Stale". Also the performances of previous color emotion models, Ou, Sato and Xin-Cheng, were compared. The results showed that Ou model showed the highest performance of explaining the experimental data in this research.

이웃 컬러들이 컬러 어피어런스와 감성에 미치는 영향

오세민(SeMin Oh),곽영신(YoungShin Kwak) 한국색채학회 2014 한국색채학회 논문집 Vol.28 No.3

일상생활 속에서 사람들은 여러 가지 상황에서 다양한 컬러를 보게 된다. 사람들이 컬러를 볼 때는 한 가지 컬러만을 보는 것이 아니라 주변에 이웃한 여러 가지 컬러를 동시에 인지하게 된다. 따라서 함께 인지되는 이웃 컬러들이 컬러 어피어런스와 감성에 영향을 미칠 수 있다. 본 연구에서는, 사람들이 컬러를 볼 때 함께 인지하는 이웃 컬러들이 컬러 어피어런스와 감성에 미치는 영향을 실험을 통해서 조사해 보았다. 실험은 이웃 컬러의 구성이 다른 3가지 배경에서 10가지 평가 컬러 패치에 대해 컬러 어피어런스와 감성을 평가하였다. 컬러 어피어런스의 평가를 위해서는 색상(Hue), 채도(Colorfulness), 명도(Lightness)가 각각 평가되었고, 감성은 10가지 감성 형용사 쌍을 이용해 10명의 피험자가 평가하였다. 본 연구의 결과는 다음과 같았다. 컬러 어피어런스의 경우, ‘색상(Hue)’과 ‘명도(Lightness)’는 이웃 컬러의 변화에 의한 의미 있는 차이가 관찰되지 않았다. ‘채도(Colorfulness)’는 이웃 컬러가 존재할 때, 채도가 더 낮아 보인다고 평가되는 것을 알 수 있었다. 감성의 경우, 이웃 컬러에 따라서 크게 영향을 받지는 않았다. 그러나 채도가 높은(Saturated) 이웃 컬러가 있는 경우, 감성 형용사 ‘Heavy-Light’, ‘Active-Passive’, ‘Masculine-Feminine’의 평가에서 영향을 받은 것을 관찰할 수 있었다. In a daily life, people see various colors. When people see a color, people recognize the color with various neighboring colors behind, not just one color independently. So these neighboring colors can affect color appearance and affectivity. In this research, we investigated the effects of neighboring colors on color appearance and affectivity when seeing a color. The experiment was done under 3 different neighboring color conditions. Ten participants evaluated color appearance and affectivity of 10 test colors. For evaluating color appearance, Hue, Colorfulness and Lightness were evaluated. For affectivity evaluation, 10 adjective sets were used. Findings of this research are as follows: Color appearance was changed by the effect of neighboring colors. Firstly, ‘Hue’ and ‘Lightness’ were not affected significantly by neighboring colors. In case of ‘Colorfulness’, participants tended to evaluate it less colorful when seeing a color with saturated neighboring colors. In case of affectivity, ‘Active-Passive’, ‘Heavy-Light" and ’Masculine-Feminine" showed affectivity changed by neighboring color changes.

벽체 결로 하자 사례와 시뮬레이션을 통한 결로 방지 성능 평가 방법 개선방안

오세민(Semin Oh),김유리(Yuri Kim),박선효(Sunhyo Park),정광섭(KwangSub Joung) 대한설비공학회 2016 대한설비공학회 학술발표대회논문집 Vol.2016 No.6

There are main issues of defect type that condensation, concrete crack and noise in multi-residential house. Especially, according to the ADDMC(Apartment Defect Dispute Mediation Committee) at MLIT(Ministry of Land Infrastructure and Transport) in Korea, condensation defects are great importance(16 percent) on whole number of reported cases of faults from 2010 to 2014 in Korea. Most condensation defects have many different causes that take a toll on the resident"s life and space. So it is very important to early detection and repair. For preventing the condensation in multi-residential house, there are standard guidelines in Korea such as "Standard of a Design for Preventing the Condensation in Multi-Residential House". This research aims to study on the evaluation and improvement of preventing the condensation aforementioned korea standard. This paper analyze type and characteristics(opaque wall) of cause of occurrence and existing state condensation defect from evaluation of real application 100 case in 2014 ADDMC data. In additions to a sample TDR(Temperature Difference Ratio) simulation data in corners of building envelop was selected for this study.

영상을 이용한 헬름홀츠-콜라우슈 효과에 관한 연구

오세민(Semin OH),곽영신(Youngshin KWAK) 한국색채학회 2015 한국색채학회 학술대회 Vol.2015 No.5