This challenge is concentated on the theme of monocular depth estimation. 

Usually we are able to estimate the distance using binocular optics or LIDAR systems, but let us assume that we don't have those and binocular vision is not avialable. 

The technology of monocular depth estimation may be usefull for development of mobile applications that estimates the distance for visually impaired person, monocular systemd for robotics, etc.