In the
human visual system,
binocular disparity is the difference in the positions of the same object in images viewed by the left and right eyes. This positional difference, called the
disparity, is used by the visual system to
triangulate the distance to the object and to
fuse the left and right views into one.
Binocular disparity is the result of
binocular parallax.
Binocular disparity is one of the
physiological cues in
depth perception.