search

xucong-zhang / data-preprocessing-gaze

Updated code for paper "Revisiting Data Normalization for Appearance-Based Gaze Estimation"
14 stars 2 forks source link

How to adjust focal norm and distance norm #2

Open atgao opened 1 year ago

atgao commented 1 year ago

Hi,

Thank you so much for sharing this and all the clarifications! One question I do have though is how does one adjust the focal norm and distance norm [x] according to the roi size parameter? I'm assuming that the distance norm is in mm which makes sense since people sit 21-24 inches away from the monitor.

xucong-zhang commented 1 year ago

Hi,

That is an interesting question. The focal norm and distance norm can be defined whatever you want. You can fix the distance norm and then change the focal length norm to visually check if the cropped image looks good or not. It is a judgment call.

The distance norm has the unit of mm, but it is not related to the real distance between the person and the monitor. The distance norm is where you put the virtual camera from the object (face center or eye center). The virtual camera can be any place in front of the object.

Best regards, Xucong