Nice visualization tool for a simulated gradient attention map on a website. See here. Its name is Feng Gui and creates through artificial intelligence techniques a gradient map for the human attention on a picture and/or webpage.
Thanks to François from Intelligent Machines and to MEDAL Blogging for the pointers! :)
The picture above is the Genetic Argonaut's gradient map!
P.S: Well, if the current picture was that one from Lenna, maybe the gradient map could be very different! :)