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    Estimates of edge detection filters in human vision

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    McIlhagga_Vision_Research.pdf (744.6Kb)
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    Publication date
    2018-12
    Author
    McIlhagga, William H.
    Keyword
    Psychophysics
    Edge detection
    Reverse correlation
    Classification images
    Rights
    © 2018 Elsevier Ltd. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Edge detection is widely believed to be an important early stage in human visual processing. However, there have been relatively few attempts to map human edge detection filters. In this study, observers had to locate a randomly placed step edge in brown noise (the integral of white noise) with a 1/𝑓2 power spectrum. Their responses were modelled by assuming the probability the observer chose an edge location depended on the response of their own edge detection filter to that location. The observer’s edge detection filter was then estimated by maximum likelihood methods. The filters obtained were odd-symmetric and similar to a derivative of Gaussian, with a peak-to-trough width of 0.1–0.15 degrees. These filters are compared with previous estimates of edge detectors in humans, and with neurophysiological receptive fields and theoretical edge detectors.
    URI
    http://hdl.handle.net/10454/16619
    Version
    Accepted Manuscript
    Citation
    McIlhagga W (2018) Estimates of edge detection filters in human vision. Vision Research. 153: 30-36.
    Link to publisher’s version
    https://doi.org/10.1016/j.visres.2018.09.007
    Type
    Article
    Collections
    Life Sciences Publications

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