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Observers are consistent when rating image conspicuity

Cerf, Moran and Cleary, Daniel R. and Peters, Robert J. and Einhäuser, Wolfgang and Koch, Christof (2007) Observers are consistent when rating image conspicuity. Vision Research, 47 (24). pp. 3052-3060. ISSN 0042-6989. doi:10.1016/j.visres.2007.06.025.

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Human perception of an image’s conspicuity depends on the stimulus itself and the observer’s semantic interpretation. We investigated the relative contribution of the former, sensory-driven, component. Participants viewed sequences of images from five different classes—fractals, overhead satellite imagery, grayscale and colored natural scenes, and magazine covers—and graded each numerically according to its perceived conspicuity. We found significant consistency in this rating within and between observers for all image categories. In a subsequent recognition memory test, performance was significantly above chance for all categories, with the weakest memory for satellite imagery, and reaching near ceiling for magazine covers. When repeating the experiment after one year, ratings remained consistent within each observer and category, despite the absence of explicit scene memory. Our findings suggest that the rating of image conspicuity is driven by image-immanent, sensory factors common to all observers.

Item Type:Article
Related URLs:
URLURL TypeDescription
Peters, Robert J.0000-0003-4691-8477
Koch, Christof0000-0001-6482-8067
Additional Information:Received 2 October 2006; received in revised form 21 March 2007. c2007 Elsevier Ltd. We wish to thank Laurent Itti and the anonymous reviewers for their valuable comments on previous versions of the manuscript. This research was supported by the National Geospatial-Intelligence Agency (NGA), the National Science Foundation, and the Swiss National Science Foundation (WE, PA00A-111447).
Group:Koch Laboratory (KLAB)
Funding AgencyGrant Number
National Geospatial-Intelligence AgencyUNSPECIFIED
Swiss National Science Foundation (SNSF)WE, PA00A-111447
Subject Keywords:Conspicuity; Psychophysics; Human recognition; Memory
Issue or Number:24
Record Number:CaltechAUTHORS:20130816-103345628
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Official Citation:Moran Cerf, Daniel R. Cleary, Robert J. Peters, Wolfgang Einhäuser, Christof Koch, Observers are consistent when rating image conspicuity, Vision Research, Volume 47, Issue 24, November 2007, Pages 3052-3060, ISSN 0042-6989,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:40643
Deposited By: KLAB Import
Deposited On:01 Feb 2008 02:59
Last Modified:11 Jan 2022 23:28

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