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Paper Abstract and Keywords
Presentation 2020-02-08 15:00
Effect of combination of directional and diffused lights on lightness perception and KANSEI evaluation of fabric
Shoichi Tamane, Naoya Takahashi, Tomoharu Ishikawa (Utsunomiya Univ.), Yoko Mizokami (Chiba Univ.), Miyoshi Ayama (Utsunomiya Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, we investigated the effect of the combination of directional light and diffused light of LED lighting on the brightness matching of fabrics and the KANSEI evaluation of scenes where objects were placed. A large cylinder was placed horizontally and the side wall surface was covered with tracing paper. The object is an achromatic fabric placed at the bottom of the cylinder. Four combinations of directional and diffused lights illuminance were used as illumination conditions. In the KANSEI evaluation, " non-glossy vs glossy ", "plain vs showy", "dark vs bright", "heavy vs light", "realistic vs fantastic", etc. The 10 adjective pairs were adopted. In lightness matching (bright), a glossy fabric is perceived as a higher brightness than a non-glossy fabric when only diffused light is used. As a result of kansei evaluation, depending on the evaluation word pairs of the fabric, there were cases where the effect of diffused light was large and the case of directional light was large depending on the presence or absence of gloss.
Keyword (in Japanese) (See Japanese page) 
(in English) LED lighting / directional light / diffused light / brightness matching / KANSEI evaluation / / /  
Reference Info. ITE Tech. Rep., vol. 44, no. 4, ME2020-21, pp. 71-74, Feb. 2020.
Paper # ME2020-21 
Date of Issue 2020-02-01 (ME) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Committee ME  
Conference Date 2020-02-08 - 2020-02-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Kanto Gakuin University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ME 
Conference Code 2020-02-ME 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effect of combination of directional and diffused lights on lightness perception and KANSEI evaluation of fabric 
Sub Title (in English)  
Keyword(1) LED lighting  
Keyword(2) directional light  
Keyword(3) diffused light  
Keyword(4) brightness matching  
Keyword(5) KANSEI evaluation  
1st Author's Name Shoichi Tamane  
1st Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
2nd Author's Name Naoya Takahashi  
2nd Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
3rd Author's Name Tomoharu Ishikawa  
3rd Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
4th Author's Name Yoko Mizokami  
4th Author's Affiliation Chiba University (Chiba Univ.)
5th Author's Name Miyoshi Ayama  
5th Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
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Speaker Author-1 
Date Time 2020-02-08 15:00:00 
Presentation Time 15 minutes 
Registration for ME 
Paper # ME2020-21 
Volume (vol) vol.44 
Number (no) no.4 
Page pp.71-74 
Date of Issue 2020-02-01 (ME) 

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