Comparing saliency maps and human focus maps when free-viewing landscape photographs

Lien Dupont, Kristien Ooms, Veerle Van Eetvelde

Publikation: Bidrag til bog/antologi/rapportKonferenceabstrakt i proceedingsForskning

Abstract

In this study, we analyse to which degree the distribution of human fixations on landscape photographs matches with computationally generated predictions based on saliency maps. In addition, we investigate if differences in similarity occur based on the degree of urban-isation present in the landscape photograph. Therefore, an eye-tracking experiment was conducted in which 42 subjects were asked to free-view 74 landscape photographs. The resulting fixation patterns were visualised in greyscale focus maps. Subsequently, these images as well as the predictive saliency maps were transformed into ASCII-matrices containing the actual value (0-255 or white-black) of each pixel. Finally, a pairwise comparison was performed between each pixel of the focus map and its corresponding pixel on the saliency map using the Spearman’s rank correlation coefficient. The results indicate a fairly strong positive correlation between the focus maps and the saliency maps. The correlation seems to be higher for weakly urbanised landscapes (few isolated buildings) compared to completely rural scenes (no buildings) and highly urbanised landscapes (dominated by buildings). Thus, especially for the former type of landscape, the viewing pattern can be relatively well predicted. This prediction reliability of the saliency maps could be helpful and time-saving in visual impact assessment procedures.
OriginalsprogEngelsk
TitelAbstracts of the 18th European Conference on Eye Movements
RedaktørerUlrich Ansorge, Thomas Ditye, Arnd Florack, Helmut Leder
Antal sider1
Publikationsdato2015
Sider136
ISBN (Trykt)1995-8692
StatusUdgivet - 2015
Udgivet eksterntJa
Begivenhed18th European Conference on Eye Movements - Wien, Østrig
Varighed: 16 aug. 201521 aug. 2015
Konferencens nummer: 18

Konference

Konference18th European Conference on Eye Movements
Nummer18
Land/OmrådeØstrig
ByWien
Periode16/08/201521/08/2015

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