Stereo Vision: An Introduction

I started working on stereoscopic vision last year. It happens to be an exciting topic and this topic is still in its infancy. So there is a lot of scope for good quality research in this area. I'm gonna give you an introduction as to what stereo vision means.
Stereo vision is the technique of getting the 3D information of a scene from two different 2D views of the scene. Actually even our eyes work on the very same principle. They take two 2D images of the scene (we got two eyes), and based on these two images they calculate the 3D model of the scene.