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On the dichromatic object-colour palette
Vision Research ( IF 1.5 ) Pub Date : 2020-11-20 , DOI: 10.1016/j.visres.2020.08.011
Alexander D Logvinenko 1
Affiliation  

The object- and light-colour palettes prove to be different for both trichromats and dichromats. This explains why there is no consensus on what colours dichromats see, since, until now, studies of dichromatic vision have mainly focused on the light-colour palette. By contrast, this study concentrates on the dichromatic object-colour palette, assuming that it is as much determined by optimal reflectances as the trichromatic palette. In this case, the dichromatic object-colour palette is simply part of the trichromatic object-colour palette. This is a consequence of the fact that the dichromatic optimal reflectances bring about identical perceptions in both dichromats and trichromats. Since the optimal reflectances cannot be physically implemented, a set of Munsell chips was selected that was close enough to the dichromatic optimal reflectances. By examining these chips, trichromats can get an idea of what the dichromatic object-colour palette looks like. These chips clearly contain red, green and blue component hues. As to green, it was tinged with such a considerable amount of white that it was hard to judge its presence even for trichromatic observers. By hue scaling, the amount of component hues (Y, B, R, G, W and Bk) that trichromats see in these chips was evaluated. Although the amount of green was found to be low, its presence for some chips was statistically significant. Thus, dichromats should see all six component hues. Also, the opponency of black and white was confirmed, which contradicts the generally accepted view that grey is a mixture of black and white.



中文翻译:

在双色物体调色板上

事实证明,三色视者和二色视者的物体调色板和浅色调色板是不同的。这解释了为什么对双色视者看到的颜色没有达成共识,因为到目前为止,对双色视觉的研究主要集中在浅色调色板上。相比之下,本研究专注于二色物体调色板,假设它与三原色调色板一样由最佳反射率决定。在这种情况下,二色对象调色板只是三原色对象调色板的一部分。这是由于二色最佳反射率在二色视者和三色视者中产生相同的感知这一事实的结果。由于无法在物理上实现最佳反射率,因此选择了一组足够接近双色最佳反射率的 Munsell 芯片。通过检查这些芯片,三色视者可以了解二色物体调色板的样子。这些芯片显然包含红色、绿色和蓝色分量色调。至于绿色,它带有大量的白色,即使是三原色观察者也很难判断它的存在。通过色调缩放,评估了三色视者在这些芯片中看到的组成色调(Y、B、R、G、W 和 Bk)的数量。虽然发现绿色的量很低,但它对一些芯片的存在在统计上是显着的。因此,二色视者应该看到所有六种成分色调。此外,黑色和白色的对立得到了证实,这与普遍接受的灰色是黑白混合的观点相矛盾。这些芯片显然包含红色、绿色和蓝色分量色调。至于绿色,它带有大量的白色,即使是三原色观察者也很难判断它的存在。通过色调缩放,评估了三色视者在这些芯片中看到的组成色调(Y、B、R、G、W 和 Bk)的数量。虽然发现绿色的量很低,但它对一些芯片的存在在统计上是显着的。因此,二色视者应该看到所有六种成分色调。此外,黑色和白色的对立得到了证实,这与普遍接受的灰色是黑白混合的观点相矛盾。这些芯片显然包含红色、绿色和蓝色分量色调。至于绿色,它带有大量的白色,即使是三原色观察者也很难判断它的存在。通过色调缩放,评估了三色视者在这些芯片中看到的组成色调(Y、B、R、G、W 和 Bk)的数量。虽然发现绿色的量很低,但它对一些芯片的存在在统计上是显着的。因此,二色视者应该看到所有六种成分色调。此外,黑色和白色的对立得到了证实,这与普遍接受的灰色是黑白混合的观点相矛盾。评估了三色视者在这些芯片中看到的组成色调(Y、B、R、G、W 和 Bk)的数量。虽然发现绿色的量很低,但它对一些芯片的存在在统计上是显着的。因此,二色视者应该看到所有六种成分色调。此外,黑色和白色的对立得到了证实,这与普遍接受的灰色是黑白混合的观点相矛盾。评估了三色视者在这些芯片中看到的组成色调(Y、B、R、G、W 和 Bk)的数量。虽然发现绿色的量很低,但它对一些芯片的存在在统计上是显着的。因此,二色视者应该看到所有六种成分色调。此外,黑色和白色的对立得到了证实,这与普遍接受的灰色是黑白混合的观点相矛盾。

更新日期:2020-11-21
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