This picture was created with the Dlib example program: face_landmark_detection_ex.cpp
from 800px-Jimmy_answering_questions.jpg. It shows how to find frontal human faces in an image and estimates their pose. The pose takes the form of 68 landmarks. These are points on the face such as the corners of the mouth, along the eyebrows, on the eyes, and so forth.
<a href="//commons.wikimedia.org/wiki/User:MTheiler" title="User:MTheiler">MTheiler</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>