A fuzzy approach to the evaluation of image complexity

  • Authors:
  • Maurizio Cardaci;Vito Di Gesù;Maria Petrou;Marco Elio Tabacchi

  • Affiliations:
  • Dipartimento di Psicologia, Università degli Studi di Palermo, v.le delle Scienze ed. 15, Palermo, Italy and C.I.T.C., Università degli Studi di Palermo, Italy;D.M.A., Sezione di Informatica, Università degli Studi di Palermo, via Archirafi 34, Palermo, Italy and C.I.T.C., Università degli Studi di Palermo, Italy;Department of Electrical and Electronic Engineering, Imperial College, Exhibition Road, London SW7 2AZ, UK;D.M.A., Sezione di Informatica, Università degli Studi di Palermo, via Archirafi 34, Palermo, Italy

  • Venue:
  • Fuzzy Sets and Systems
  • Year:
  • 2009

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Abstract

The inherently multidimensional problem of evaluating the complexity of an image is of a certain relevance in both computer science and cognitive psychology. Computer scientists usually analyze spatial dimensions in order to deal with automatic vision problems, such as feature extraction. Psychologists seem more interested in the temporal dimension of complexity, as a means to explore attentional models. Is it possible to define, by merging both approaches, a more general index of visual complexity? The aim of this paper is the definition of objective measures of image complexity that fits with the so named perceived time. Towards the end we have defined a fuzzy mathematical model of visual complexity, based on fuzzy measures of entropy; the results obtained by applying this model to a set of pictorial images present a strong correlation with the outcomes of an experiment with human subjects, based on variation of subjective temporal estimations associated with changes in visual attentional load, which is also described herein.