Face cropping using facial landmarks

Question

I have facial landmark coordinates and I want to crop the frontal face as precisely as possible without loosing facial information as shown in figure:

I have already tried drawing circles from nose center, but it is not very precise. if somebody has done this before can help me with the idea of doing so in a good way with the pseudo-code. I will code it later.

Answer 1

This data is not enough for face cropping. Use dlib or opencv libraries. They have methods to get 68 landmarks.