EnChroma 多凹槽滤光片在增强异常三色人色彩感知方面的效果预测

IF 1.5 4区 心理学 Q4 NEUROSCIENCES
Lucy P. Somers, Jenny M. Bosten
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引用次数: 0

摘要

EnChroma 滤色镜是一种辅助工具,旨在改善异常三色人(anomalous trichromats)的色觉。这种滤色镜的使用备受争议,因为迄今为止,实验室对其有效性的评估结果与正面的传闻报道基本不符。然而,EnChroma 滤色镜的效果会因观察条件的不同而不同,包括刺激物是宽带反射表面还是 RGB 显示器上显示的颜色、照明光谱是宽带还是窄带、特定滤色镜的透射光谱以及观察者的锥体光谱敏感度函数。我们创建了一个反常三基色色觉模型,以预测 EnChroma 滤光片对反常三基色色觉中受损色彩信号的影响。利用该模型,我们改变了照明、滤光片类型和观察者锥体敏感度函数,并测试了以宽带反射表面或 RGB 显示器呈现颜色的效果。我们还使用高光谱图像来评估滤光片对反常三色者自然场景色彩视觉的影响。根据模型结果预测,在一系列观察条件下,滤色镜在增强反常三色人的等效 L/(L + M) 色对比度方面应该大致有效,但对氘代人的效果要比对原色人的效果好得多。据预测,对于在宽带光源下呈现的宽带反射表面,滤光片的效果要好于在窄带光源下呈现的表面或在 RGB 显示器上呈现的颜色。由于该模型没有考虑对比度适应和知觉学习的潜在影响,因此需要进行经验验证。EnChroma 滤光片对氘化色彩视觉效果的实证测试结果与模型预测结果的比较将在随附的论文中介绍(Somers 等人,准备中)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Predicted effectiveness of EnChroma multi-notch filters for enhancing color perception in anomalous trichromats

EnChroma filters are aids designed to improve color vision for anomalous trichromats. Their use is controversial because the results of lab-based assessments of their effectiveness have so far largely failed to agree with positive anecdotal reports. However, the effectiveness of EnChroma filters will vary depending on the conditions of viewing, including whether the stimuli are broadband reflective surfaces or colors presented on RGB displays, whether illumination spectra are broadband or narrowband, the transmission spectra of particular filters, and the cone spectral sensitivity functions of the observer. We created a model of anomalous trichromatic color vision to predict the effects of EnChroma filters on the color signals impaired in anomalous trichromacy. Using the model we varied illumination, filter type and observer cone sensitivity functions, and tested the effect of presenting colors as broadband reflective surfaces or on RGB displays. We also used hyperspectral images to assess the impact of the filters on anomalous trichromats’ color vision for natural scenes. Model results predicted that the filters should be broadly effective at enhancing anomalous trichromats’ equivalent to L/(L + M) chromatic contrasts under a range of viewing conditions, but are substantially more effective for deuteranomals than for protanomals. The filters are predicted to be more effective for broadband reflective surfaces presented under broadband illuminants than for surfaces presented under narrowband illuminants or for colors presented on RGB displays. Since the potential impacts of contrast adaptation and perceptual learning are not considered in the model, it needs to be empirically validated. Results of empirical tests of the effects of EnChroma filters on deuteranomalous color vision in comparison with model predictions are presented in an accompanying paper (Somers et al., in prep.).

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来源期刊
Vision Research
Vision Research 医学-神经科学
CiteScore
3.70
自引率
16.70%
发文量
111
审稿时长
66 days
期刊介绍: Vision Research is a journal devoted to the functional aspects of human, vertebrate and invertebrate vision and publishes experimental and observational studies, reviews, and theoretical and computational analyses. Vision Research also publishes clinical studies relevant to normal visual function and basic research relevant to visual dysfunction or its clinical investigation. Functional aspects of vision is interpreted broadly, ranging from molecular and cellular function to perception and behavior. Detailed descriptions are encouraged but enough introductory background should be included for non-specialists. Theoretical and computational papers should give a sense of order to the facts or point to new verifiable observations. Papers dealing with questions in the history of vision science should stress the development of ideas in the field.
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