Preserving perceptual distances in chromaticity diagrams

Preserving perceptual distances in chromaticity diagrams
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保留色度图中的感知距离

DOI:
10.1093/beheco/ars018
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发表时间:
2012
期刊:
影响因子:
2.4
通讯作者:
Pike T
Pike T
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Pike T

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色度图描绘感知颜色之间的多维主观关系的笛卡尔图,独立于强度,被广泛用于动物色觉的研究,因为它们允许颜色辨别和色觉介导的行为之间的直接联系。然而,因为这些图是不变的感光器类之间的噪声水平的差异,根据一些模型的颜色辨别阈值,在色度空间中的颜色之间的距离不一定与它们的感知距离。因此,从色品图的颜色数据的几何解释可能会导致误导性的结论。本文描述了一种从Vorobyev和Osorio(Vorobyev M,Osorio D. 1998.感受器噪声作为颜色阈值的决定因素。Proc R Soc B. 265:351-358),使得它们之间的感知距离被精确地保持。它还描述了如何在同一张图中同时显示彩色(颜色)和非彩色(亮度)对比度。这种方法的潜在好处,通常使用的三角形和四面体色品图进行了讨论方面的动物视觉生态学的研究。
Chromaticity diagrams—Cartesian plots that depict the multidimensional subjective relationship between perceived colors, independent of intensity—are widely used in studies of animal color vision, as they allow direct links to be made between color discrimination and color vision–mediated behaviors. However, because these diagrams are invariant to the differences in noise levels between photoreceptor classes that underlie some models of color discrimination thresholds, the distance between colors in chromaticity space is not necessarily related to their perceptual distance. The geometric interpretation of color data from chromaticity diagrams may therefore lead to misleading conclusions. This paper describes a method of plotting visual perceptual distances derived from the noise-corrected model of Vorobyev and Osorio (Vorobyev M, Osorio D. 1998. Receptor noise as a determinant of color thresholds. Proc R Soc B. 265:351–358) such that the perceptual distance between them is exactly preserved. It also describes how both chromatic (color) and achromatic (brightness) contrasts can be visualized within the same diagram. The potential benefits of this approach over commonly used triangular and tetrahedral chromaticity diagrams are discussed with regards to the study of animal visual ecology.
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