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Paper Abstract and Keywords
Presentation 2020-11-28 12:05
Sensitivity differences between color discrimination and supra-threshold color difference along hues.
Yuken Ito, Tomonori Tashiro, Yasuki Yamauchi (Yamagata Univ.), Takehiro Nagai (Tokyo Tech)
Abstract (in Japanese) (See Japanese page) 
(in English) We psychophysically measured sensitivities of color discrimination and supra-threshold color difference perception along hues in order to elucidate the change in sensitivities due to the amplitude of stimulus color differences. The sensitivities of supra-threshold color differences were estimated using the MLDS method 1) for small color difference stimuli and 2) for all stimuli including larger color differences. The results showed that the sensitivity change along hues were more prominent for the supra-threshold colors than the color discrimination. In addition, the sensitivity change was further more pronounced when estimated for stimuli including large color differences than when estimated only for small color difference stimuli. Finally, the hues with high sensitivities corresponded to approximately the color category boundaries. These results show the possibility that the impacts of color categories on perceptual color differences increases with the magnitude of stimulus color differences.
Keyword (in Japanese) (See Japanese page) 
(in English) Color discrimination / Supra-threshold color difference / Weber-Fechner’s law / Psychophysics / / / /  
Reference Info. ITE Tech. Rep., vol. 44, no. 31, HI2020-79, pp. 75-78, Nov. 2020.
Paper # HI2020-79 
Date of Issue 2020-11-20 (HI) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Committee HI VRPSY  
Conference Date 2020-11-27 - 2020-11-28 
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Paper Information
Registration To HI 
Conference Code 2020-11-HI-VRPSY 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Sensitivity differences between color discrimination and supra-threshold color difference along hues. 
Sub Title (in English)  
Keyword(1) Color discrimination  
Keyword(2) Supra-threshold color difference  
Keyword(3) Weber-Fechner’s law  
Keyword(4) Psychophysics  
1st Author's Name Yuken Ito  
1st Author's Affiliation Yamagata University (Yamagata Univ.)
2nd Author's Name Tomonori Tashiro  
2nd Author's Affiliation Yamagata University (Yamagata Univ.)
3rd Author's Name Yasuki Yamauchi  
3rd Author's Affiliation Yamagata University (Yamagata Univ.)
4th Author's Name Takehiro Nagai  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2020-11-28 12:05:00 
Presentation Time 20 minutes 
Registration for HI 
Paper # HI2020-79 
Volume (vol) vol.44 
Number (no) no.31 
Page pp.75-78 
Date of Issue 2020-11-20 (HI) 

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