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首页> 外文期刊>Journal of vision >Inhibitory competition in figure-ground perception: Context and convexity
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Inhibitory competition in figure-ground perception: Context and convexity

机译：图形背景感知中的抑制性竞争：情境和凸性

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Convexity has long been considered a potent cue as to which of two regions on opposite sides of an edge is the shaped figure. Experiment 1 shows that for a single edge, there is only a weak bias toward seeing the figure on the convex side. Experiments 1– 3 show that the bias toward seeing the convex side as figure increases as the number of edges delimiting alternating convex and concave regions increases, provided that the concave regions are homogeneous in color. The results of Experiments 2 and 3 rule out a probability summation explanation for these context effects. Taken together, the results of Experiments 1– 3 show that the homogeneity versus heterogeneity of the convex regions is irrelevant. Experiment 4 shows that homogeneity of alternating regions is not sufficient for context effects; a cue that favors the perception of the intervening regions as figures is necessary. Thus homogeneity alone does not alone operate as a background cue. We interpret our results within a model of figure-ground perception in which shape properties on opposite sides of an edge compete for representation and the competitive strength of weak competitors is further reduced when they are homogeneous.
机译：长期以来，凸度一直被认为是关于边缘相对两侧的两个区域中哪个区域是形状的有效提示。实验1表明，对于单个边缘，在看到凸侧上的图形时只有很小的偏差。实验1–3表明，当界定凹面区域颜色均匀时，随着界定凸面和凹面交替区域的边的数量增加，朝向看到凸面的偏见也会增加。实验2和3的结果排除了这些上下文效应的概率求和解释。综合起来，实验1-3的结果表明，凸区的同质性与异质性无关。实验4表明，交替区域的同质性不足以产生上下文效应。一种暗示需要将中间区域视为数字的提示。因此，同质性并不能单独作为背景提示。我们在图形-地面感知模型中解释我们的结果，在该模型中，边缘相对两侧的形状属性竞争表现，并且当弱竞争者同质时，其竞争强度会进一步降低。

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