Multispectral colour analysis for quantitative evaluation of pseudoisochromatic color deficiency tests

Maris Ozolinsh; Sergejs Fomins

doi:10.1117/12.871846

8 November 2010 Multispectral colour analysis for quantitative evaluation of pseudoisochromatic color deficiency tests

Maris Ozolinsh, Sergejs Fomins

Proceedings Volume 7845, Optics in Health Care and Biomedical Optics IV; 78450J (2010) https://doi.org/10.1117/12.871846
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Multispectral color analysis was used for spectral scanning of Ishihara and Rabkin color deficiency test book images. It was done using tunable liquid-crystal LC filters built in the Nuance II analyzer. Multispectral analysis keeps both, information on spatial content of tests and on spectral content. Images were taken in the range of 420-720nm with a 10nm step. We calculated retina neural activity charts taking into account cone sensitivity functions, and processed charts in order to find the visibility of latent symbols in color deficiency plates using cross-correlation technique. In such way the quantitative measure is found for each of diagnostics plate for three different color deficiency carrier types - protanopes, deutanopes and tritanopes. Multispectral color analysis allows to determine the CIE xyz color coordinates of pseudoisochromatic plate design elements and to perform statistical analysis of these data to compare the color quality of available color deficiency test books.

Citation Download Citation

Maris Ozolinsh and Sergejs Fomins "Multispectral colour analysis for quantitative evaluation of pseudoisochromatic color deficiency tests", Proc. SPIE 7845, Optics in Health Care and Biomedical Optics IV, 78450J (8 November 2010); https://doi.org/10.1117/12.871846

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