The relative contribution of scene context and target features to visual search in scenes
The relative contribution of scene context and target features to visual search in scenes
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DOI：
10.3758/app.72.5.1283
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发表时间：
2010-07-01
影响因子：
1.7
通讯作者：
Heaven, Chelsea
中科院分区：
文献类型：
--
作者：
Castelhano, Monica S.;Heaven, Chelsea
许多实验表明，与知道目标名称相比，了解目标的视觉特征可以提高搜索性能。其他实验表明，场景背景可以促进自然场景中的对象搜索。在这项研究中，我们调查了场景背景和目标特征如何影响搜索性能。我们研究了来自场景上下文的两种可能的信息来源-场景的要点和场景的视觉细节-以及它们如何潜在地与目标特征信息交互。在开始搜索之前，参与者被展示了一个场景和一个描绘图片或类别名称的目标线索(或无信息控制)。使用眼动测量，我们研究了目标特征和场景背景如何影响搜索的两个组成部分：早期的注意引导过程和后来参与目标识别的验证过程。我们发现，场景背景和目标特征都改善了制导，但目标特征也提高了目标识别的速度。此外，我们发现，场景的视觉细节在提高导引能力方面发挥了重要作用，而不仅仅是场景的主旨。
Many experiments have shown that knowing a target's visual features improves search performance over knowing the target name. Other experiments have shown that scene context can facilitate object search in natural scenes. In this study, we investigated how scene context and target features affect search performance. We examined two possible sources of information from scene context-the scene's gist and the visual details of the scene-and how they potentially interact with target-feature information. Prior to commencing search, participants were shown a scene and a target cue depicting either a picture or the category name (or no-information control). Using eye movement measures, we investigated how the target features and scene context influenced two components of search: early attentional guidance processes and later verification processes involved in the identification of the target. We found that both scene context and target features improved guidance, but that target features also improved speed of target recognition. Furthermore, we found that a scene's visual details played an important role in improving guidance, much more so than did the scene's gist alone.