PERCEPTUAL EFFECTS OF SCENE CONTEXT ON OBJECT IDENTIFICATION
PERCEPTUAL EFFECTS OF SCENE CONTEXT ON OBJECT IDENTIFICATION
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DOI：
10.1007/bf00868064
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发表时间：
1990-01-01
影响因子：
2.3
通讯作者：
DYDEWALLE, G
中科院分区：
文献类型：
--
作者：
DEGRAEF, P;CHRISTIAENS, D;DYDEWALLE, G
在许多研究中，由真实世界场景提供的上下文被认为对在这样的场景中识别单个对象具有强制性的感知效果。这一主张为挑战广泛接受的数据驱动的视觉感知模型提供了基础，以便倡导具有直言不讳的自上而下特征的替代模型。本文通过对已有证据的回顾，证明了所观察到的情景-语境效应可能是知觉后和任务依赖的猜测策略的产物。提出了一种新的研究范式，提供了一个在线测量的真实感知效果的上下文对对象识别。第一固定持续时间的对象偶然固定在自由探索的真实世界的场景被证明是增加时，对象是不可能的场景中或违反某些方面的典型空间外观it. These的上下文违反的影响只出现在后期阶段的场景探索，相反的概念，图式驱动的场景感知有效的第一个场景固定。此外，有证据表明，在支持存在一个促进组件的场景背景下的效果。这表明，上下文直接影响感知对象处理的难易程度，而不仅仅是作为检查感知过程输出的可解释性的框架。最后，我们的研究结果与其他对比结果相反。一些未来的研究问题进行了强调。
In a number of studies the context provided by a real-world scene has been claimed to have a mandatory, perceptual effect on the identification of individual objects in such a scene. This claim has provided a basis for challenging widely accepted data-driven models of visual perception in order to advocate alternative models with an outspoken top-down character. The present paper offers a review of the evidence to demonstrate that the observed scene-context effects may be the product of post-perceptual and task-dependent guessing strategies. A new research paradigm providing an on-line measure of genuine perceptual effects of context on object identification is proposed. First-fixation durations for objects incidentally fixated during the free exploration of real-world scenes are shown to increase when the objects are improbable in the scene or violate certain aspects of their typical spatial appearance in it. These effects of contextual violations are shown to emerge only at later stages of scene exploration, contrary to the notion of schema-driven scene perception effective from the very first scene fixation. In addition, evidence is reported in support of the existence of a facilitatory component in scene-context effects. This is taken to indicate that the context directly affects the ease of perceptual object processing and does not merely serve as a framework for checking the plausibility of the output of perceptual processes. Finally, our findings are situated against other contrasting results. Some future research questions are highlighted.