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A saliency-based search mechanism for overt and covert shifts of visual attention

Itti, Laurent and Koch, Christof (2000) A saliency-based search mechanism for overt and covert shifts of visual attention. Vision Research, 40 (10-12). pp. 1489-1506. ISSN 0042-6989.

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Most models of visual search, whether involving overt eye movements or covert shifts of attention, are based on the concept of a saliency map, that is, an explicit two-dimensional map that encodes the saliency or conspicuity of objects in the visual environment. Competition among neurons in this map gives rise to a single winning location that corresponds to the next attended target. Inhibiting this location automatically allows the system to attend to the next most salient location. We describe a detailed computer implementation of such a scheme, focusing on the problem of combining information across modalities, here orientation, intensity and color information, in a purely stimulus-driven manner. The model is applied to common psychophysical stimuli as well as to a very demanding visual search task. Its successful performance is used to address the extent to which the primate visual system carries out visual search via one or more such saliency maps and how this can be tested.

Item Type:Article
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Koch, Christof0000-0001-6482-8067
Additional Information:Received 27 May 1999; received in revised form 19 July 1999. © 2000 Elsevier Science Ltd. We thank Dr Toet from the TNO Human Factors Research Institute, The Netherlands, for providing us with the database of military images and human search times on these images. This research was supported by NSF-ERC, NIMH and ONR.
Group:Koch Laboratory (KLAB)
Funding AgencyGrant Number
Engineering Research Center at Caltech UNSPECIFIED
U.S. Office of Naval ResearchUNSPECIFIED
Subject Keywords:Visual attention; Saliency; Vision systems
Issue or Number:10-12
Record Number:CaltechAUTHORS:20130816-103150410
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:40407
Deposited By: KLAB Import
Deposited On:11 Jan 2008 22:00
Last Modified:03 Mar 2020 13:01

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