Visual and Haptic Representations of Material Properties
Visual and Haptic Representations of Material Properties
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DOI：
10.1163/22134808-00002429
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发表时间：
2013-01-01
影响因子：
1.6
通讯作者：
Gegenfurtner, Karl R.
中科院分区：
文献类型：
--
作者：
Baumgartner, Elisabeth;Wiebel, Christiane B.;Gegenfurtner, Karl R.
近年来，物质感知的研究受到越来越多的关注。显然，视觉和触觉在材料感知中都发挥着重要作用，但目前尚不清楚这两种感官在材料感知任务中的比较如何。在这里，我们着手研究不同材料的视觉和触觉表征之间的对应程度。我们要求参与者对 84 种不同材料的多种材料特性进行分类和评级。在触觉案例中，参与者被蒙上眼睛并要求根据触觉探索评估材料。在视觉条件下，参与者仅根据他们的视觉印象评估刺激。虽然触觉条件下的分类表现不如视觉条件下的一致，但视觉和触觉模式之间的评分高度相关。 PCA 显示，所有材料样本在两种模式的感知空间内都以类似的方式组织。此外，在这两种意义上，前两个主要成分均由硬度和粗糙度主导。这是触觉基础的两个材料特征。我们的结论是，虽然触觉似乎对物质感知至关重要，但它单独收集的信息可能不够细粒度和丰富，不足以实现完美的物质识别。
Research on material perception has received an increasing amount of attention recently. Clearly, both the visual and the haptic sense play important roles in the perception of materials, yet it is still unclear how both senses compare in material perception tasks. Here, we set out to investigate the degree of correspondence between the visual and the haptic representations of different materials. We asked participants to both categorize and rate 84 different materials for several material properties. In the haptic case, participants were blindfolded and asked to assess the materials based on haptic exploration. In the visual condition, participants assessed the stimuli based on their visual impressions only. While categorization performance was less consistent in the haptic condition than in the visual one, ratings correlated highly between the visual and the haptic modality. PCA revealed that all material samples were similarly organized within the perceptual space in both modalities. Moreover, in both senses the first two principal components were dominated by hardness and roughness. These are two material features that are fundamental for the haptic sense. We conclude that although the haptic sense seems to be crucial for material perception, the information it can gather alone might not be quite fine-grained and rich enough for perfect material recognition.