when i perform the code, everything is ok. But i am confused that how to extract the face area( according to the standard 3d model) on frontalized face image
in other issue, the frontlization can be clipped into rectangular region according to: cropped_face = frontal_image[(d.left()):(d.right()), (d.top()):(d.bottom()), :] but now how to obtain the overall facial region
for example the red line :

when i perform the code, everything is ok. But i am confused that how to extract the face area( according to the standard 3d model) on frontalized face image

in other issue, the frontlization can be clipped into rectangular region according to: cropped_face = frontal_image[(d.left()):(d.right()), (d.top()):(d.bottom()), :] but now how to obtain the overall facial region
for example the red line :