search

chili-epfl / attention-tracker

137 stars 97 forks source link

Using a different set of points #17

Open beraldofilippo opened 8 years ago

beraldofilippo commented 8 years ago

Hi, I'm interested in evaluating how this algorithm performs using a different set of 3D points of the head, for instance using a female head shape to track a female individual. Any advices on that?

Also, how did you manage to get those 3D points? I've looked at the link suggested (wikipedia...) but I could not find anything useful, thanks!

alexis-jacq commented 8 years ago

Actually, the points we fund on wikipedia (position of the sellion etc...) are just used to compute the position in space of a head that is already detected. In order to detect the face, we use the face-detection algorithm provided by DLib. It is based on the recognition of 68 landmarkers of a human face. If you want to just detect women heads, I am not aware of the state of the art, maybe good results are know obtained with convNets ?

beraldofilippo commented 8 years ago

Thanks for the response, I should have been more clear though :) sorry! I can successfully reproduce all of the steps of the algorithm (and actually I've made an Android version of GAZR) I was wondering how to evaluate the performance on a different set of points.

So no need to 'track female shapes', I'm just wondering if changing the set of 3D points according to the individual could give better results (say, if the subject is a caucasian male use a specific set with anthropometric mean value for caucasians, if the subject is a child use a set with anthropometric mean values for children and so on)

Thanks. (Still no clue about where to find those 3D points sets :/)

alexis-jacq commented 8 years ago

Ah ok ! So you want to say "with hands" to the computer that the subject is an adult woman or a child, and then the computer uses specific points for the head pose estimation. That's a good idea, and we are interested (since we use this algorithm for Child-Robot interaction studies) if you find such a set of coordinates! Indeed in https://en.wikipedia.org/wiki/Human_head we just have values for adult men and women but not the children

beraldofilippo commented 8 years ago

Exactly. Maybe we should keep this issue open and somebody may help in this. Thanks.