ABSTRACT
Telepresence and virtual reality systems aim to provide operators with sufficient information to perform specific tasks, and to give the sense of presence in the remote or virtual environment. Typically, this requires the provision of information about the threedimensional structure of the environment, which is often achieved using binocular cues. This introduces the need for specialist hardware for stereoscopic viewing, and often leads to discomfort arising from the conflict between the operator’s states of vergence and accommodation. An alternative cue, providing information that is geometrically equivalent to that available from binocular disparity and an equally compelling perception of 3D structure (Rogers & Graham, 1979), is motion parallax. This is a
potentially useful cue since in a visually coupled system no additional hardware is required, and the discomfort arising from accommodation/vergence conflict suffered in binocular systems is avoided.
