Comparative Study of Fixation Density Maps

Ulrich Engelke, Hantao Liu, Junle Wang, Patrick Le Callet, Ingrid Heynderickx, Hans-Jurgen Zepernick, Anthony Maeder

    Research output: Contribution to journalArticlepeer-review

    27 Citations (Scopus)

    Abstract

    Fixation density maps (FDM) created from eye tracking experiments are widely used in image processing applications. The FDM are assumed to be reliable ground truths of human visual attention and as such, one expects a high similarity between FDM created in different laboratories. So far, no studies have analyzed the degree of similarity between FDM from independent laboratories and the related impact on the applications. In this paper, we perform a thorough comparison of FDM from three independently conducted eye tracking experiments. We focus on the effect of presentation time and image content and evaluate the impact of the FDM differences on three applications: visual saliency modeling, image quality assessment, and image retargeting. It is shown that the FDM are very similar and that their impact on the applications is low. The individual experiment comparisons, however, are found to be significantly different, showing that inter-laboratory differences strongly depend on the experimental conditions of the laboratories. The FDM are publicly available to the research community.

    Original languageEnglish
    Article number6355679
    Pages (from-to)1121-1133
    Number of pages13
    JournalIEEE Transactions on Image Processing
    Volume22
    Issue number3
    DOIs
    Publication statusPublished - 2013

    Keywords

    • Eye tracking
    • fixation density maps
    • inter-laboratory differences
    • visual attention

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