Color Constancy of Red-Green Dichromats and Anomalous Trichromats
Color Constancy of Red-Green Dichromats and Anomalous Trichromats
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DOI：
10.1167/iovs.09-4576
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发表时间：
2010-04-01
影响因子：
4.4
通讯作者：
Nascimento, Sergio M. C.
中科院分区：
文献类型：
--
作者：
Baraas, Rigmor C.;Foster, David H.;Nascimento, Sergio M. C.
目的。色觉缺陷与颜色匹配和颜色辨别异常有关，但其对人们判断不同光线下表面颜色恒定性（颜色恒定性）的能力的影响尚不清楚。这项工作有两个目的：首先，量化先天性红绿色缺陷受试者的颜色恒定程度；其次，测试是否可以通过瑞利异常镜匹配来预测异常三色视者的颜色恒定程度。方法。在一项需要区分光源变化和表面反射率变化的任务中测试了红绿色缺陷受试者的颜色恒定性。在计算机显示器屏幕上生成的类似蒙德里安的彩色图案被用作刺激，以避免自然物体和场景提供的空间线索。光谱反射率取自孟塞尔色彩手册和自然场景。光源取自日光轨迹。结果。红色盲和绿色盲的孟塞尔光谱反射率比正常三色盲的表现更差，但自然光谱反射率的损害较小。正常三色视者和次异常三色视者的表现与正常三色视者一样好，或几乎一样好，与反射率类型无关。个体差异与瑞利异常镜匹配不相关。结论。尽管有临床色觉测试的证据，但红绿色缺陷者在不同光线下判断表面颜色时的不利程度比预期的要小。 （投资眼科可见科学。2010；51：2286-2293）DOI：10.1167/iovs.09-4576
PURPOSE. Color-vision deficiency is associated with abnormalities in color matching and color discrimination, but its impact on the ability of people to judge the constancy of surface colors under different lights (color constancy) is less clear. This work had two aims: first, to quantify the degree of color constancy in subjects with congenital red-green color deficiency; second, to test whether the degree of color constancy in anomalous trichromats can be predicted from their Rayleigh anomaloscope matches.METHODS. Color constancy of red-green color-deficient subjects was tested in a task requiring the discrimination of illuminant changes from surface-reflectance changes. Mondrian-like colored patterns, generated on the screen of a computer monitor, were used as stimuli to avoid the spatial cues provided by natural objects and scenes. Spectral reflectances were taken from the Munsell Book of Color and from natural scenes. Illuminants were taken from the daylight locus.RESULTS. Protanopes and deuteranopes performed more poorly than normal trichromats with Munsell spectral reflectances but were less impaired with natural spectral reflectances. Protanomalous and deuteranomalous trichromats performed as well as, or almost as well as, normal trichromats, independent of the type of reflectance. Individual differences were not correlated with Rayleigh anomaloscope matches.CONCLUSIONS. Despite the evidence of clinical color-vision tests, red-green color-deficient persons are less disadvantaged than might be expected in their judgments of surface colors under different lights. (Invest Ophthalmol Vis Sci. 2010;51:2286-2293) DOI:10.1167/iovs.09-4576