University of Southampton, UK.
University of Southampton, UK.
Vision Res. 2022 Nov;200:108078. doi: 10.1016/j.visres.2022.108078. Epub 2022 Jul 14.
In this study, we propose a new approach to the perceptual representation of object colours. Three-dimensional objects have a polychromatic colour distribution. Yet, human observers abstract from the variation along the three perceptual colour dimensions when describing objects, such as when we say, "a banana is yellow". We propose that the perceived object colour is determined by the dominant hue. The dominant hue corresponds to the first principal component of an object's chromaticities. Across three experiments, we show for a sample of objects that the chromatic variation away from the dominant hue is almost completely neglected by human observers under non-laboratory viewing conditions. This is partly due to the low visibility of this variation, and partly to attentional change blindness. These findings reveal the potential role of dominant hue in the perception of object colours. Dominant hue may enable us to determine the most representative colours of objects because perceived object colours tend to be maximally bright and saturated. The present findings also imply that we can simplify the colour distributions of objects by projecting them onto their dominant hue. This may be useful for computational applications.
在这项研究中，我们提出了一种新的物体颜色知觉表示方法。三维物体具有多色的颜色分布。然而，人类观察者在描述物体时会忽略三个知觉颜色维度上的变化，例如当我们说“香蕉是黄色的”。我们提出，感知到的物体颜色是由主导色调决定的。主导色调对应于物体色度的第一主成分。在三个实验中，我们展示了在非实验室观察条件下，对于一组物体，人类观察者几乎完全忽略了主导色调之外的颜色变化，这部分是由于这种变化的低可见度，部分是由于注意力变化盲。这些发现揭示了主导色调在物体颜色知觉中的潜在作用。主导色调可以使我们确定物体最具代表性的颜色，因为感知到的物体颜色往往是最亮和最饱和的。本研究结果还表明，我们可以通过将物体的颜色分布投影到它们的主导色调上来简化它们。这对于计算应用可能很有用。
