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http://dx.doi.org/10.5143/JESK.2010.29.1.107

Subjective Assessments and Analyses of Letter Sizes Under Black and White Contrasts for Various Font Sizes Through the Irradiation-effect  

Kong, Yong-Ku (Department of Industrial Engineering, Sungkyunkwan University)
Kim, Dae-Min (Department of Industrial Engineering, Sungkyunkwan University)
Sohn, Seong-Tae (Department of Industrial Engineering, Sungkyunkwan University)
Han, Jun-Goo (Department of Industrial Engineering, Sungkyunkwan University)
Publication Information
Journal of the Ergonomics Society of Korea / v.29, no.1, 2010 , pp. 107-112 More about this Journal
Abstract
Irradiation is a phenomenon that causes white objects on a black background to appear to spread into near dark backgrounds, but the reverse is not. In this study, the effects of font size and thickness of letters on the legibility were investigated in combinations of black letters/white background as well as white letters/black background. Ten subjects who had been no disease of eyes and their eyesight is over 1.0 were recruited and tested subjective assessments of letter sizes for various font sizes (2pt to 80pt) and thickness of letters (normal, bold) under 600lux illumination and 50cm-distance of eyes and target letters for this study. Ming-style font type which was generally used in text of books, papers, and journals were tested in this study. Results showed that generally people subjectively assessed the white letters on black background (W/B) were larger sizes of letters than the black letters on white background (B/W) even both letter sizes were the same in both normal and bold thickness of letters. This phenomenon was happened in case of only over 22 font size (with border line about 22~24pts). Less than 22 font sizes, many people reported that both letters (W/B and B/W) are looks the same sizes in normal as well as bold letters. These findings were interpreted also by the irradiation phenomenon and more detail information was presented in this manuscript.
Keywords
Irradiation-effect; Font size; Thickness of letters; Contrast; Legibility;
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1 Shieh, K. and Lin, C., Effects of screen type, ambient illumination, and color combination on VDT visual performance and subjective preference, International Journal of Industrial Ergonomics, 26, 527-536, 2000.   DOI
2 Tomioka, K., Study on legibility of characters for the elderly-effects of character display modes on legibility, Journal of Physiological Anthropology, 26(2), 159-164, 2007.   DOI
3 Vartabedian, A. G., The effects of letter size, case, and generation method on CRT display search time, Human Factors, 13(4), 363-368, 1971.   DOI
4 Cole, R. F., Stromeyerand, C. F. and Kronauer, R., Visual interactions with luminance and chromatic stimuli, Journal of the Optical Society of America A, 7, 1238-140, 1990.   DOI
5 Hall, A., Hanna, P., The impact of web page text-background color combinations on readability, retention, aesthetics and behavioral intention, Behavior and Information Technology, 23(3), 183-195, 2004.   DOI
6 Hill, A. L. and Scharff, L.V., Legibility of computer displays with various foreground/background color combinations, font styles, and font types, Proceedings of the Eleventh National Conference on Undergraduate Research, 724-746, 1997.
7 Knoblauch, K., Arditiand, A. and Szlyk, J., Reading rate depends on luminance contrast but not chromatic contrast, Investigative Ophthalmology and Visual Science(Suppl.), 29, 44, 1988.
8 Knoblauch, K., Arditiand, A. and Szlyk, J., Effects of chromatic and luminance contrast on reading, Journal of the Optical Society of America A, 8, 428-439, 1991.   DOI
9 Legge, G., Rubin, G. and Luebker, A., Psychophysics of reading: The role of contrast in normal vision, Vision Research, 7, 1165-1177, 1987.
10 Legge, G., Parish, A. and Lee, H., Psychophysics of reading: Comparing color contrast and luminance contrast, Journal of Optical Society of America A, 7(10), 2002-2010, 1990.   DOI
11 Mclean, M., Brightness contrast, color contrast, and legibility, Human Factors, 7(6), 521-526, 1965.   DOI
12 Nielsen, J., Designing web usability: The practice of simplicity, IN: New Riders Publishing, Indianapolis, 2000.
13 Rivlin, C., Lewisand, R. and Davies-Cooer, L. R., Guidelines for screen design, Blackwell Scientific Publications, Oxford, 2000.
14 이수진, 김진우, 2007, 휘도대비가 가독성에 미치는 영향에 대한 실험연구, 대한인간공학회지, 26(2), 21-33.
15 박경수, 1980, 인간공학, 영지문학사.
16 정우현, 한재준, 정찬섭, 2003, 한글의 글자꼴이 가독성에 미치는 영향, 한국심리학회 학술발표논문집, 491-500.
17 이상희, 명노해, 2001, 웹 브라우저에서 한글의 서체와 크기에 대한 가독성에 관한 연구, 대한인간공학회 춘계학술대회 논문집, 33-36.
18 최동찬, 박영택, 1987, 한글의 획폭비와 가시거리에 관한 연구, 대한인간공학회지, 6(2), 9-18.   과학기술학회마을
19 황우상, 이동춘, 이상도, 이진호, 1997, VDT 화면에서 한글의 글자 크기와 서체에 따른 탐색속도와 오류율에 관한 실험적 연구, 대한인간공학회지, 16, 29-38.
20 Bruce, M. and Forster, J., The visibility of colored characters on colored backgrounds in view data displays, Visible Language, 16, 382-390, 1982.
21 Bernard, M. L., Chaparro, B. S., Mills, M. M. and Halcomb, C. G., Comparing the effects of text size and format on the readability of computer-displayed Times New Roman and Arial text, International Journal of Human Computer Studies, 59, 823-835, 2003.   DOI