The Feng-GUI heatmap is a composition of several algorithms from neuro-science studies of Natural Vision Processing, Computational Attention, eye-tracking sessions, perception and cognition of humans.

Or in English: "What people are looking at?"

This artificial intelligence service simulates human vision during the first 5 seconds of exposure to visuals.  It generates a heatmap – from dark blue through green to red, describing the regions of interest that catches attention.