question:how to draw the line of gaze? about gazetracking

[1996scarlet]

Try draw_3d_arrow function in this file

And this paper can help you to understand the algorithm

theta_left, pha_left, end_left = draw_3d_arrow(frame, poi_left)
theta_right, pha_right, end_right = draw_3d_arrow(frame, poi_right)

[Ashing00]

@1996scarlet
thank you ,I will try it.

[chenti2x]

@1996scarlet @Ashing00
hello，poi_left = (landmarks[36], landmarks[39], cp[2]), what dose cp[2] mean?

thank you very much!!!

[antoinelame]

The library doesn't allow to directly draw a line that indicates the direction of the gaze, but only returns coordinates (x, y) that allow to know the precise precision of the pupil within the eye. If the pupil is on the right side of the eye, then the person is looking to the right.

Maybe you can use it to draw a line, it's up to you! Let me know the results you get.