Artefacts of visual perception

Artefacts of visual perception are anomalies that result from the way the human visual system processes information.

  • Some artefacts seem to be hard-wired into the ways that the human eye and brain process visual stimuli. Examples include:
    • The perception of bands of colour when observing phenomena such as rainbows which contain a continuous  range of wavelengths across the visible spectrum.
    • Moiré patterns that appear when an area of parallel dark lines with interspersed white spaces is overlaid on another similar pattern that is slightly displaced or rotated.
    • Visual illusions that fool most observers provide a fascinating way to study artefacts related to different attributes of visual perception.