BACKGROUND & AIMS:
:Although natural images often include discordant information about object boundaries, the majority of research on texture segmentation has involved variation along a single dimension, e.g. colour, orientation, size. In this study, we examined orientation-based texture segmentation in the presence and absence of task-irrelevant colour variation. Previously, it had been shown that orientation-based texture segmentation was impaired if the elements, normally of one colour, were randomly allocated one of two colours (Morgan et al, 1992 Proceedings of the Royal Society of London, Series B 248 291-295). We found that this interference disappeared, however, when the spatial pattern of the colour variation was regular, as opposed to random, and when the elements were randomly positioned. We consider four models of how relevant and irrelevant texture information might combine to produce the interference effect, with special regard to these new findings. None of the models could account for the dependency of the interference effect on the spatial arrangement of colour and orientation in the texture. We suggest that inter-element separation and spatial-frequency selectivity are critical variables in the interference effect.
背景与目标:
:虽然自然图像通常包含有关对象边界的不一致信息,但是大多数纹理分割研究都涉及沿单个维度的变化,例如颜色,方向,大小。在这项研究中,我们在存在和不存在与任务无关的颜色变化的情况下,检查了基于方向的纹理分割。以前的研究表明,如果通常将一种颜色的元素随机分配为两种颜色中的一种,则基于方向的纹理分割会受到损害(Morgan等人,《伦敦皇家学会学报,1992年》,系列B 248 291-295 )。我们发现,当颜色变化的空间模式是规则的而不是随机的并且元素是随机放置时,这种干扰消失了。我们考虑了四个模型,这些模型将相关和不相关的纹理信息如何组合以产生干扰效果,并特别注意这些新发现。这些模型都无法说明干涉效应对纹理的颜色和方向的空间排列的依赖性。我们建议元素间分离和空间频率选择性是干扰效应中的关键变量。