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Proceedings Paper

Comparative study of visual color differences using reflective and self-luminous color stimuli
Author(s): John H. Xin; C. C. Lam
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Paper Abstract

In this study, visual color difference assessements were conducted using both reflective colors which are dyed cotton fabrics with no obvious texture pattern and self-luminous colors displayed on a CRT monitor. All together, eighty-two pairs of color samples belonging to five different color centres were used. The average color difference for all pairs is about 5.0 CIELAB units. The values of the color difference for the self-luminous color pairs (ΔEself-luminous) are very close to those of the corresponding reflective color pairs (ΔEreflective), i.e., the reproduction of the reflective color pairs onto the CRT monitor was very accurate. Grey scale method was used in the visual assessment of color difference. The assessments were done using five different viewing conditions, i.e., reference viewing condition recommended by CIE (CIE Technical Report CIE 116-1995) and the other conditions which include a 3-inch gap between samples in a pair, small sized sample corresponding to 2° angle of subtend and two different background colors. In comparison with the visual color differences of the reflective pairs under the reference condition, the results obtained from the CRT color pairs are 15% smaller. Under other viewing conditions, the visual color difference of the CRT color pairs are 13 to 18% smaller than those of hte reflective color pairs. Further comparison was made using chromatic color discrimination ellipses for self-luminous and reflective colors.

Paper Details

Date Published: 6 June 2002
PDF: 4 pages
Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); doi: 10.1117/12.464661
Show Author Affiliations
John H. Xin, Hong Kong Polytechnic Univ. (Hong Kong)
C. C. Lam, Hong Kong Polytechnic Univ. (Hong Kong)

Published in SPIE Proceedings Vol. 4421:
9th Congress of the International Colour Association
Robert Chung; Allan Rodrigues, Editor(s)

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