Art’s hidden topology: A window into human perception
Fig 5
Visualisation of the pipeline for obtaining feature distributions and gaze maps.
After the image is converted to greyscale, the spatial distribution of cycles is obtained from the BW and WB filtrations, resulting in feature maps for each type of topological feature (for example, cycle density, persistence or cycle perimeter). Firstly, for each type of topological feature (for example, cycle density, persistence or cycle perimeter) and each image, the Empirical Cumulative Distribution Function (ECDFs), , is obtained, which is intrinsic to the image. Secondly for a subject s, gaze-heatmaps Gs and its complement heatmap
are used to obtain
(looking) and
(not looking), by weighting the image feature maps with the corresponding gaze-heatmap.