Visit to Jeff Pelz in his image lab

Wearable eye tracker vs. lab-based eye trackers

* In-lab: Purkinje eye trackers: Purkinje is reflections off of the eye, a "glint in someone's eye"

* Investigate different questions in different envirnoments
* Limitations of the lab: people may behave differently in a lab environment, and Perkingi trackers require the head to be immobilized
* In-lab equipment has faster frequency and higher accuracy

* SOme equipment is based on video cameras rather than eye-trackers

When reading: small smooth movement ( a word) with jumps to the next word and the next line. Sometimes regression moments to rereread something

In our terms, a "gaze" is when you look at one object, rather than an entire scene, but w/o keeping your head/eyes totally still
Modeling gaze: what you fixate on in an image, how long, and why. | By modeling gaze, build a model of what you think people will look at, and compare it with experimental data

In 1/10 of a second, you get the general idea of an image (i.e "This is a kitchen")

bottom-up: start with pixels and then form a concept
top-down: start looking for a concept and then doscover the details [i.e. pixels]
For top-down you need to have an understanding of the concept you are looking for