研究生: |
張榮恩 Jung-En Chang |
---|---|
論文名稱: |
CIE 1976 UCS色度座標對色彩的視覺亮度、冷熱程度、白度的影響 Influences of CIE 1976 UCS Chromaticity Coordinates on Perceived Brightness, Hot/Cold Feeling and Whiteness |
指導教授: |
歐立成
Li-Chen Ou |
口試委員: |
孫沛立
Pei-Li Sun 林宗翰 Tzung-Han Lin |
學位類別: |
碩士 Master |
系所名稱: |
應用科技學院 - 色彩與照明科技研究所 Graduate Institute of Color and Illumination Technology |
論文出版年: | 2020 |
畢業學年度: | 108 |
語文別: | 中文 |
論文頁數: | 140 |
中文關鍵詞: | 色彩情感 、CIE 1976 UCS色度座標 、相關色溫 |
外文關鍵詞: | Colour emotion, CIE 1976 UCS, Correlated Colour temperature |
相關次數: | 點閱:348 下載:12 |
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本研究目的為探討色彩的視覺亮度(perceived brightness)、探討色彩的視覺冷熱程度(perceived hot/cold feeling)、探討色偏差值(Duv)對白度(perceived whiteness)的影響、以及探討相關色溫(CCT)對白度的影響。
本研究在暗室進行5個心理物理學實驗,所有實驗皆以22.5吋 Eizo 顯示器呈現色彩刺激物。共有30位受測者參與實驗,包含15位男性與15位女性。實驗一使用亮度的心理量尺對15種全域色彩進行配對比較;實驗二使用冷熱的心理量尺對15種全域色彩進行配對比較;實驗三使用冷熱的心理量尺對25種低彩色進行配對比較;實驗四與五使用白度的心理量尺對25種低彩色進行配對比較。
根據實驗一結果,發現因亥姆霍茲-柯勞許效應會影響全域色彩的亮度感覺,當離最低彩度之色度座標越近的測試色,亮度感覺會越來越低;當離最低彩度之色度座標越遠的的測試色,亮度感覺會越來越高。當色度座標往藍色或是紅色偏移的全域色彩,亮度感覺更為強烈,藍色為受測者認為最亮的全域色彩,其次是紅色。在實驗二與實驗三發現 u' 座標明顯會影響色彩的冷熱感覺,u' 座標與色彩的冷熱感覺為指數關係。在實驗四發現隨著CCT上升而 ISO-CCT line 上最高白度的 CIE (u', v')色度座標逐漸從負值 Duv 往正值 Duv 偏移。在實驗五發現隨著Duv變化,CCT的座標位置並沒有太大的變動趨勢。最終利用實驗四、五所求得之最高白度的 CCT 與Duv,得到 CIE (u', v') 色度圖上的最高白度之色彩座標。
This study is to clarify the perceived brightness of colour, the perceived hot/cold feeling of colour, the influence of Duv and correlated colour temperature (CCT) on perceived whiteness.
Five psychophysical experiments were carried out using the paired comparison method in a darkened room. A 22.5-inch Eizo display was used in experiments to present colour stimuli. Thirty observers, including 15 males and 15 females, participated in the experiments. Two psychophysical scales, “brightness” in Experiment 1 and “hot/cold” in Experiment 2, were used for paired comparisons of 15 chromatic colour stimuli. In Experiment 3, only “hot/cold” was used for paired comparisons of 25 achromatic colour stimuli. In Experiment 4~5, only “whiteness” was used for paired comparisons of 25 achromatic colour stimuli.
According to results of Experiment 1, hue and chroma were both found to influence the perception of brightness. As the chroma increases, the stimulus appeared brighter and brighter. Colours near the Planckian locus appeared least bright. In terms of hue, blue was found to be the brightest, followed by red. The findings agree well with the Helmholtz–Kohlrausch effect. For Experiment 2, hue was found to have a strong impact on the “hot/cold” perception of colour stimulus. Red was found to be the hottest. Blue was the coolest. For Experiment 3, the “hot/cold” perception of achromatic colour stimuli was found to be influenced by the u' coordinate of CIE (u', v'). For u' coordinate, it is clear that the higher the u' coordinate, the hotter the colour tended to appear. For Experiment 4~5, the “whiteness” perception of achromatic colour stimuli was found to be influenced by both CCT and Duv. For CCT, as the CCT increases, the CIE (u', v') coordinates of the highest perceived whiteness gradually shift from the negative Duv values to the positive Duv values. For Duv, as the change of Duv, the CIE (u', v') coordinates of CCT has not changed much. Finally, The colour coordinates of the highest perceived whiteness using the CCT(Experiment 5) and Duv(Experiment 4) of the highest perceived whiteness obtained on CIE (u', v') chromaticity diagram are found.
1. P. A. Garcia, R. Huertas, M. Melgosa, G. Cui. Measurement of the relationship between perceived and computed color differences. Journal of the Optical Society of America A. 24. 1823-1829. (2007).
2. L. C. Ou, M. R. Luo, A. Woodcock, A. Wright. A study of colour emotion and colour preference. Part I: Colour emotions for single colours. Color Research & Application. 29(3). 232-240. (2004).
3. B. Koo, Y. Kwak. Color appearance and color connotation models for unrelated colors. Color Research & Application. 40(1). 40-49. (2013).
4. L. C. Ou, Y. Yuan, T. Sato, W. Y. Lee, F. Szabó, S. Sueeprasan, R. Huertas. Universal models of colour emotion and colour harmony. Color Research & Application. 43(5). 736-748. (2018).
5. L. C. Ou, M. R. Luo. A colour harmony model for two-colour combinations. Color Research & Application. 31(3). 191-204. (2006).
6. Y. J. Cho, L. C. Ou, G. Cui, M. R. Luo. New colour appearance scales for describing saturation, vividness, blackness, and whiteness. Color Research & Application. 42(5). 552-563. (2017).
7. S. Ma, M. Wei, J. Liang, B. Wang, Y. Chen, M. Pointer, M. R. Luo. Evaluation of whiteness metrics. Lighting Research & Technology. 50(3). 429-445. (2016).
8. M. D. Fairchild. Color Appearance Models. 2nd Ed. Wiley-IS&T. Chichester. UK (2005).
9. R. S. Berns. Methods for characterizing CRT displays. Displays. 16(4). 173-182. (1996).
10. M. Krystek. An algorithm to calculate correlated colour temperature. Color Research & Application. 10(1). 38-40. (1985).
11. Y. Ohno, Practical use and calculation of CCT and Duv. LEUKOS. 10(1). 47-55. (2013).
12. M. D. Fairchild, E. Pirrotta. Predicting the lightness of chromatic object colors using CIELAB. Color Research & Application. 16(6). 385-393. (1991).
13. International Commission on Illumination (CIE). CIE International Lighting Vocabulary. CIE Publication No. 17.4. (1987).
14. S. A. Burns, V. C. Smith, J. Pokorny, A. E. Elsner, Brightness of equal-luminance lights. Journal of the Optical Society of America. 72(9). 1225. (1982).
15. M. S. Rea, J. P. Freyssinier. White lighting. Color Research & Application. 38(2). 82-92. (2011).
16. M. R. Luo, S. Ma. A neutral white locus. LEUKOS. 1-11. (2018).
17. C. L. Sanders, G. Wyszecki. L/Y ratios in terms of CIE-chromaticity coordinates. Journal of the Optical Society of America. 48(6). 389. (1958).
18. G. Wyszecki. Correlate for lightness in terms of CIE chromaticity coordinates and luminous reflectance. Journal of the Optical Society of America. 57(2). 254. (1967).
19. M. Ikeda, S. Ashizawa. Equivalent lightness of colored objects of equal munsell chroma and of equal munsell value at various illuminances. Color Research & Application. 16(2). 72-80. (1991).
20. W. Y. Lee, M. R. Luo, L. C. Ou. Assessing the affective feelings of two and three-dimensional objects. Color Research & Application. 34(1). 75-83. (2009).
21. W. Y. Lee, S. Y. Pai. The affective feelings of colored typefaces. Color Research & Application. 37(5). 367-374. (2011).
22. L. C. Ou, M. R. Luo, A.Woodcock, A.Wright. A study of colour emotion and colour preference. Part II: Colour emotions for two-colour combinations. Color Research & Application. 29(4). 292-298. (2004).
23. T. Sato, K. Kajiwara, H. Hoshino, T. Nakamura. Quantitative evaluation andcategorising of human emotion induced by colour. Advances in Colour Science and Technology. 3(3). 53-59. (2000).
24. T. Nakamura, H. Hoshino, T. Sato, K. Kajiwara. The attempt of quantitative expression for colour emotion-influence of assessment method (in Japanese). Sen-i Gakkaishi. 56(11). 508-517. (2000).
25. H. Li, M. R. Luo, X. Liu, B. Wang, H. Liu. Evaluation of colour appearance in a real lit room. Lighting Research & Technology. 48(4). 412-432. (2015).
26. L. L. Thurstone. A law of comparative judgment. Psychological Review. 34(4). 273-286. (1927).