An Image Statistics-Based Model for Fixation Prediction

  • Yanulevskaya V
  • Marsman J
  • Cornelissen F
 et al. 
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The problem of predicting where people look at, or equivalently salient region detection, has been related to the statistics of several types of low-level image features. Among these features, contrast and edge information seem to have the highest correlation with the fixation locations. The contrast distribution of natural images can be adequately characterized using a two-parameter Weibull distribution. This distribution catches the structure of local contrast and edge frequency in a highly meaningful way. We exploit these observations and investigate whether the parameters of the Weibull distribution constitute a simple model for predicting where people fixate when viewing natural images. Using a set of images with associated eye movements, we assess the joint distribution of the Weibull parameters at fixated and non-fixated regions. Then, we build a simple classifier based on the log-likelihood ratio between these two joint distributions. Our results show that as few as two values per image region are already enough to achieve a performance comparable with the state-of-the-art in bottom-up saliency prediction.

Author-supplied keywords

  • Natural image statistics
  • Visual saliency
  • Weibull distribution

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  • Victoria Yanulevskaya

  • Jan Bernard Marsman

  • Frans Cornelissen

  • Jan Mark Geusebroek

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