이미지의 컬러 조절에 따른 JND와 선호도 분석; 인물의 피부색을 중심으로
Study on the preference and the subjective impressions according to color balance control of portrait images
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초록
The purpose of this study is to draw out types of colors and the color adjustment values t o enhance portrait photographic images. It is achieved by analysing individual preference an d sensitivity changes of test subjects when low latitude facial colors were controlled. Sampl es has been made with a portrait picture with an average color and brightness, which is va ried by six digital colors, red, green, blue, cyan, magenta and yellow. And the properties of each color has been also gradated. Two experiments were done with the samples. First ex periment was a JDN test, which is to find out whether and to what extent test subjects ca n distinguish the color gradation when the samples were presented. Second experiment was to analyze changes in sensitivity, which is done by subjective image quality tests with diffe red colors and gradation samples. The sensitivity changes were recorded with given descrip tive adjectives. The results of experiments showed that heavy variations in color and grada tion leads to decrease in preference. And tolerated range of the variation to maintain the sa me preference with the original image was narrow. Heavy variation may increase artistic v alue, however such varied images are not preferred since the variation lowers harmony, aes thetic impression as well as capability of the image. Therefore color and gradation change with a portrait images is not recommended and must be applied cautiously.
Abstract
The purpose of this study is to draw out types of colors and the color adjustment values t o enhance portrait photographic images. It is achieved by analysing individual preference an d sensitivity changes of test subjects when low latitude facial colors were controlled. Sampl es has been made with a portrait picture with an average color and brightness, which is va ried by six digital colors, red, green, blue, cyan, magenta and yellow. And the properties of each color has been also gradated. Two experiments were done with the samples. First ex periment was a JDN test, which is to find out whether and to what extent test subjects ca n distinguish the color gradation when the samples were presented. Second experiment was to analyze changes in sensitivity, which is done by subjective image quality tests with diffe red colors and gradation samples. The sensitivity changes were recorded with given descrip tive adjectives. The results of experiments showed that heavy variations in color and grada tion leads to decrease in preference. And tolerated range of the variation to maintain the sa me preference with the original image was narrow. Heavy variation may increase artistic v alue, however such varied images are not preferred since the variation lowers harmony, aes thetic impression as well as capability of the image. Therefore color and gradation change with a portrait images is not recommended and must be applied cautiously.
참고문헌 (19)
- Boust, C., "Color Enhancement of Di gital images by Experts and Preference Ju dgments by Observers", The Journal of ima ging science and technology, 50(1), pp.1~11 (2006)
- Brain W. Keelan, "Handbook of Imag e Quality; Characterization and Prediction" (2002), Marcel Dekker
- Fundamentals and review of co nsidered test methods, "I3A", CPIQ, ~ (2007)
- "ISO 20462. Photography - Psychop hysical experimental methods to estimate i mage quality", International Organization for Standardization, ~ (2004)
- "ISO 3664. Viewing conditions - Gra phic technology and photography", Internati onal Organization for Standardization, ~ (2000)
- "ITU-R Rec. BT. 500-11. Methodolo gy for the subjective assessment of the qu ality of television pictures", ~ (2002)
- Jenni Radun, "Content and Qualit y: Interpretation-Based Estimation of Imag e Quality", ACM Transactions on Applied Pe rception, 4(4), pp.21~ (2008)
- Mark D. Fairchild, "컬러어피어런스 모델" (2007), 시그마프레스
- P. Bodrogi, "Color m emory for various sky, skin, and plant colo urs: Effect of the image context", Color Res earch and Application, 26(4), pp.278~289 (2001)
- Pedersen, M., "Attributes of a New Image Quality Model for Color Prints", 17th Color Imaging Conference Final Program an d Proceedings, pp.204~209 (2009), Society for Imaging Science and Technology
- S.N. Yendrikhovskij, "Representation of m emory prototype for an object color", Color Research and Application, 24(6), pp.52~67 (1999)
- S. R. Fernandez, "Analysis of observer and cultur al variability while generating “preferred”color reproductions of pictorial images", Journal of Imaging Science and Technology, 49(1), pp.96~104 (2005)
- S.N. Yendrikhovskij, "Representation of m emory prototype for an object color", Color Research and Application, 24(6), pp.52~67 (1999)
- 노연숙, "디지털 컬러 사진의 정석" (2014), 디지털북스
- 노연숙, "색의 속성 변화에 따른 이미지의 감성 반응 분석 연구", 한국색채학회논문집, 29(2), pp.49~60 (2015), 한국색채학회[DOI]
- 노연숙, "사진의 주관적 화질 평가 방법 ; 요인 분석을 통한 평가 항목 선정을 중심으로", 한국콘텐츠학회 논문지, 10(8), pp.186~197 (2010), 한국콘텐츠학회
- 노연숙, "사진 이미지의 감성에 대한 언어적 분석", 한국콘텐츠학회 논문지, 12(2), pp.182~195 (2012), 한국콘텐츠학회
- 박수진, "사진 이미지와 관련된 감성 어휘 분석 및 색 유무에 따른 감성 반응 비교", 감성과학, 7(1), pp.41~49 (2004), 한국감성과학회
- 이구형, "감성과 감정의 이해를 통한 감성의 체계적 측정 평가.", 감성과학회지, 1(1), pp.113~122 (1998)