Parallax occurs when closer objects appear to shift more than objects that are further away as your point of view shifts. Try shifting your head from side to side (position, not rotation) and notice how […]


Photogrammetry, a technique that is almost as old as photography itself, uses photos taken from different angles to measure distances between objects in order to recreate those objects in three dimensions. While photogrammetry is generally […]


Pitch is rotating your head to look up or down. It is one of the six degrees of freedom (6DoF). This rotation does not result in parallax.

positional tracking

VR systems with support for positional tracking, like the Rift or Vive, detect the position of the system relative to the world around it. This is done with the help of sensors, which record signals […]