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Discrimination of colors by red–green color vision-deficient observers through digitally generated red filter
Visual Neuroscience ( IF 1.1 ) Pub Date : 2019-02-11 , DOI: 10.1017/s0952523818000068
Keiko Sato 1 , Takaaki Inoue 1 , Shuto Tamura 1 , Hironori Takimoto 2
Affiliation  

Previous studies have shown that with the use of tinted lenses (or colored filters), individuals with red–green color vision deficiency (CVD) report an improvement in their performance on certain color vision tests. In this context, this study examines the effects of a digitally generated red-colored filter and identifies the mechanism mainly responsible for the changes in red–green CVD observers’ performance on a D-15 arrangement test performed using the filter. We simulate the red filter digitally with the spectral transmittance similar to that of the X-Chrom, which is a red-tinted lens. Fourteen red–green CVD subjects are subjected to the D-15 test on a computer monitor under four filter conditions, consisting of one condition without the filter and three conditions with the filter, corresponding to the opacity of the red filter. The results show that while the simulated red filter improves the performance of deutans to arrange the caps in the D-15 test, this is not the case for protans. In addition, considerations based on the human cone-contrast model enable us to identify that the improvement in deutan observers largely results from the increase in the luminance contrast between stimuli and a background. To summarize, the red filter simulated in this study induces different changes in the red–green CVD observer luminance contrast between the protan and deutan types, with the result that the performance of deuteranopes improves while that of protanopes deteriorates.

中文翻译:

红色-绿色视觉缺陷的观察者通过数字生成的红色滤光片区分颜色

先前的研究表明,通过使用有色镜片(或彩色滤光片),患有红绿色视觉缺陷 (CVD) 的人报告说他们在某些色觉测试中的表现有所改善。在这种情况下,本研究检查了数字生成的红色滤光片的效果,并确定了红绿 CVD 观察者在使用该滤光片进行的 D-15 排列测试中表现变化的主要机制。我们用类似于红色镜片的 X-Chrom 的光谱透射率对红色滤光片进行数字模拟。十四名红-绿 CVD 受试者在计算机显示器上在四种过滤条件下接受 D-15 测试,包括一种不使用过滤器的条件和三种使用过滤器的条件,对应于红色过滤器的不透明度。结果表明,虽然模拟的红色过滤器提高了 deutans 在 D-15 测试中排列上限的性能,但 protans 的情况并非如此。此外,基于人类锥体对比度模型的考虑使我们能够确定 deutan 观察者的改善主要是由于刺激和背景之间亮度对比度的增加。总而言之,本研究中模拟的红色滤光片导致 protan 和 deutan 类型之间的红绿色 CVD 观察者亮度对比度发生不同变化,结果 deuteranopes 的性能提高,而 protanopes 的性能下降。基于人类锥体对比度模型的考虑使我们能够确定 deutan 观察者的改善主要是由于刺激和背景之间亮度对比度的增加。总而言之,本研究中模拟的红色滤光片导致 protan 和 deutan 类型之间的红绿色 CVD 观察者亮度对比度发生不同变化,结果 deuteranopes 的性能提高,而 protanopes 的性能下降。基于人类锥体对比度模型的考虑使我们能够确定 deutan 观察者的改善主要是由于刺激和背景之间亮度对比度的增加。总而言之,本研究中模拟的红色滤光片导致 protan 和 deutan 类型之间的红绿色 CVD 观察者亮度对比度发生不同变化,结果 deuteranopes 的性能提高,而 protanopes 的性能下降。
更新日期:2019-02-11
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