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Image correlates of crowding in natural scenes.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wallis, Thomas S. A. Bex, Pieter |
| Copyright Year | 2011 |
| Abstract | Visual crowding is the inability to identify visible features when they are surrounded by other structure in the peripheral field. Since natural environments are replete with structure and most of our visual field is peripheral, crowding represents the primary limit on vision in the real world. However, little is known about the characteristics of crowding under natural conditions. Here we examine where crowding occurs in natural images. Observers were required to identify which of four locations contained a patch of "dead leaves'' (synthetic, naturalistic contour structure) embedded into natural images. Threshold size for the dead leaves patch scaled with eccentricity in a manner consistent with crowding. Reverse correlation at multiple scales was used to determine local image statistics that correlated with task performance. Stepwise model selection revealed that local RMS contrast and edge density at the site of the dead leaves patch were of primary importance in predicting the occurrence of crowding once patch size and eccentricity had been considered. The absolute magnitudes of the regression weights for RMS contrast at different spatial scales varied in a manner consistent with receptive field sizes measured in striate cortex of primate brains. Our results are consistent with crowding models that are based on spatial averaging of features in the early stages of the visual system, and allow the prediction of where crowding is likely to occur in natural images. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://jov.arvojournals.org/pdfaccess.ashx?url=/data/journals/jov/933492/i1534-7362-12-7-6.pdf |
| PubMed reference number | 22798053v1 |
| Alternate Webpage(s) | https://doi.org/10.1167/12.7.6 |
| DOI | 10.1167/12.7.6 |
| Journal | Journal of vision |
| Volume Number | 12 |
| Issue Number | 7 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Area striata structure Brain Cerebral cortex Contain (action) Embedding Plant Leaves Primates Root Mean Square Weight observers |
| Content Type | Text |
| Resource Type | Article |
