4Sight is an image rendering framework which uses four degrees of freedom (red, green, cyan, violet - RGCV) to control the stimulation of melanopsin independently of cone cells
RGB light engines (e.g. LED, LCD,
DLP, LCoS) in modern displays
output a colour co-ordinate to
recreate the effect that a natural
image has on the eye’s red, green
and blue cone cells. However, RGB
approaches don’t account for an
additional retinal photoreceptor -
melanopsin - which also influences
the visual experience (brightness,
circadian cycles, pupil size, alertness, mood).
4Sight is an image rendering
framework which uses four degrees
of freedom (red, green, cyan, violet -
RGCV) to control the stimulation of
melanopsin independently of cone
In near-eye displays, users are
acutely sensitive to image quality.
A 4sight light engine could enable
closer replication of the natural
world and sophisticated control of
• “Visual salt”: Control of
melanopsin produces more
vivid and natural looking
images without distorting
chromaticity or luminance.
• Circadian effects: “Night-time”
viewing settings without
distorted colour balance.
• Power consumption: A cyan
primary can reduce the
required luminance from a,
typically less efficient, deep-blue primary.
• Dynamic range: Enhance
perceived brightness in dark
conditions without increasing
• Colour palette: Accurate
rendering of blues & greens
beyond UHDTV standards (rec.
2020), utilise the full gamut of
the latest cinematic cameras