Journal article
Is visual image segmentation a bottom-up or an interactive process?
Perception & psychophysics, Vol.59(8), pp.1280-1296
12/1997
DOI: 10.3758/BF03214214
PMID: 9401461
Abstract
Visualimage 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.
Details
- Title: Subtitle
- Is visual image segmentation a bottom-up or an interactive process?
- Creators
- Shaun Vecera - Department of Psychology University of Utah 84112 Salt Lake City UTMartha Farah - University of Pennsylvania Philadelphia Pennsylvania
- Resource Type
- Journal article
- Publication Details
- Perception & psychophysics, Vol.59(8), pp.1280-1296
- Publisher
- Springer-Verlag; New York
- DOI
- 10.3758/BF03214214
- PMID
- 9401461
- ISSN
- 0031-5117
- eISSN
- 1532-5962
- Language
- English
- Date published
- 12/1997
- Academic Unit
- Psychological and Brain Sciences; Iowa Neuroscience Institute
- Record Identifier
- 9984066382602771
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