Papers that
reference this paper.
Window of visibility: psychophysical theory of fidelity in
time-sampled visual motion displays
Andrew B. Watson,
A. J. Ahumada Jr. & J. Farrell
(1986)
Journal of the Optical Society of America A 3(3), 300-307.
Acrobat Version
Abstract
Many visual displays, such as movies and television, rely on sampling in the
time domain.
We derive the spatiotemporal-frequency spectra for some simple moving images and
illustrate how these spectra are altered by sampling in the time domain.
We construct a simple model of the human perceiver that predicts the critical
sampling rate required to render sampled and continuous moving images
indistinguishable.
The rate is shown to depend on the spatial and temporal acuity of the observer
and on the velocity and spatial-frequency content of the image.
Several predictions of this model are tested confirmed.
The model is offered as an explanation of many of the phenomena known as
'apparent motion'.
Finally, the implications of the model for computer-generated imagery are
discussed.