Is visual image segmentation a bottom-up or an interactive process?
Is visual image segmentation a bottom-up or an interactive process?
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DOI：
10.3758/bf03214214
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发表时间：
1997-11-01
期刊：
影响因子：
--
通讯作者：
Farah, MJ
中科院分区：
文献类型：
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作者：
Vecera, SP;Farah, MJ
视觉图像分割是视觉系统对以下特征进行分组的过程： 属于单个形状的一部分。图像分割是自下而上的过程还是交互式过程？在实验 1 和 2 中，我们向受试者展示了两个重叠的形状，并要求他们确定两个探测位置是在同一形状上还是在不同形状上。通过呈现直立或旋转字母来控制自上而下支持的可用性。当形状与熟悉的形状（直立的字母）相对应时，受试者的反应最快。在实验3中，我们使用了该分割任务的一个变体来排除受试者在分割和识别两个字母后做出相同/不同判断的可能性。最后，在实验 4 中，我们排除了直立字母的优势仅仅是由于相对于旋转字母更快地识别直立字母的可能性。结果表明，先前的效果并不是由于更快地识别直立字母所致；而是由于对直立字母的识别速度更快。刺激熟悉程度影响了细分本身。结果根据视觉图像分割的交互模型进行讨论。
Visual image segmentation is the process by which the visual system groups features that: are part of a single shape. Is image segmentation a bottom-up or an interactive process? In Experiments 1 and 2, we presented subjects with two overlapping shapes and asked them to determine whether two probed locations were on the same shape or on different shapes. The availability of top-down support was manipulated by presenting either upright or rotated letters. Subjects were fastest to respond when the shapes corresponded to familiar shapes-the upright letters. In Experiment 3, we used a variant of this segmentation task to rule out the possibility that subjects performed same/different judgments after segmentation and recognition of both letters. Finally, in Experiment 4, we ruled out the possibility that the advantage for upright letters was merely due to faster recognition of upright letters relative to rotated letters. The results suggested that the previous effects were not due to faster recognition of upright letters; stimulus familiarity influenced segmentation per se. The results are discussed in terms of an interactive model of visual image segmentation.