On the detection of salient contours
Abstract
When visual space is densely populated by elements of random orientation, elements which happen to be aligned may form a perceptually salient 'contour' (Field et al., 1993; Kovacs and Julesz, 1993). Here we further characterize human performance for detecting this type of Gestalt grouping. We find that detectability of salient contours reaches a plateau when they comprise at least 10 elements and are presented for at least 200 ms. It has been suggested that the detection of salient contours is mediated by the intrinsic connectivity of striate cortex and several computational models have been formulated on this basis. The present data provide a benchmark against which such models can be evaluated.
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Instead of being the first stage in a feedforward pipeline, V1 is better described as the unique high-resolution buffer in the visual system for geometric calculations.
“This led us to propose that, instead of being the first stage in a feedforward pipeline, 13 V1 is better described as the unique high-resolution buffer in the visual system for geometric calculations. 40,41”
From Hierarchical Bayesian inference in the visual cortex (2003) · cites this paper as [40]
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Hierarchical Bayesian inference in the visual cortex
Lee, T. S., & Mumford, D. (2003) · Journal of the Optical Society of America A · doi:10.1364/josaa.20.001434 · Cited by 1,473 · see citing works
Perceptual grouping in disorganized schizophrenia
Uhlhaas, P. J., Phillips, W. A., Mitchell, G., & Silverstein, S. M. (2006) · Psychiatry Research · doi:10.1016/j.psychres.2005.10.016 · Cited by 149 · see citing works
Reduced top-down influences in contour detection in schizophrenia
Silverstein, S., Hatashita-Wong, M., Schenkel, L., Wilkniss, S., Kovács, I., Fehér, A., Smith, T., Goicochea, C., Uhlhaas, P., Carpiniello, K., et al. (2006) · Cognitive Neuropsychiatry · doi:10.1080/13546800444000209 · Cited by 67 · see citing works
Development of a world-wide web based contour integration test
Kozma-Wiebe, P., Silverstein, S. M., Fehér, A., Kovács, I., Ulhaas, P., & Wilkniss, S. M. (2006) · Computers in Human Behavior · doi:10.1016/j.chb.2004.03.017 · Cited by 40 · see citing works
- Authors
- Braun, J.
- Affiliations
- California Institute of Technology (US)
- Corresponding author
- Braun, Jochen
- ORCID
- Braun, Jochen
- Venue
- Spatial Vision
- Publisher
- Walter de Gruyter GmbH
- Published
- 1999
- Volume
- 12
- Issue
- 2
- Pages
- 211-225
- ISSN
- 0169-1015 (ISSN-L)
- 1568-5683
- OpenAlex
- W2093311024
- Cited by
- 90
- References
- 0
- Citations by year
- 2024: 1 · 2022: 1 · 2019: 1 · 2018: 2 · 2017: 5 · 2016: 3 · 2015: 8 · 2014: 3 · 2013: 6 · 2012: 3
- FWCI
- 2.59
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Spatial Vision (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Public Health Service (56484-01)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Visual Attention and Saliency Detection
- Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
- Keywords
- Gestalt grouping, contour detection, visual perception, primary visual cortex, computational models of vision, perceptual salience, detection delay, group size
- MeSH terms
- Computer Simulation, Form Perception, Humans, Models, Theoretical, Visual Cortex, Observer Variation
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