Range from Vision

Range from Vision

An important topic in computer vision is how to extract range information.
Humans extract depth from vision. In most cases, though not always, depth
perception is due to having two eyes and being able to triangulate as shown
in Fig. 6.20, also STEREOPSIS known as stereopsis. Other times, perception of depth is
OPTIC FLOW related to optic flow and simple cues such as shadows, texture, and expected
size of objects. This section covers three types of vision sensors which are
commonly used to create an image representing a depth map: stereo camera
pairs, light stripers, and laser ranger finders.