OmniTek Ultra XR, User Manual

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2–22 XR-56-201 5 Viewer 03/18
Viewer
CIE Colour Chart Tile
CIE Colour Chart Description
The
CIE Colour Chart
tile, available on the
local user interface, displays the colour
content of the image within the bounding
triangle of the chosen colour space. The
is user to ensure that all colours within
the image are within gamut.
This is required to ensure that
conventions between different colour
spaces are correct.
The CIE Colour Chart is an x, y plot of the chrominance of each pixel as represented in XYZ colour
space, presented as a trace drawn over a standard background. The enclosed area within this
background indicates the full range of X, Y values that correspond to colours which are visible to the
human eye.
The chart has some special properties compared to other measures such as gamut charts, histograms
or the vectorscope. These are:
Each colour that the eye can see is represented by a single point on the chart.
The point representing a colour is independent of the colour primaries that will be used to
display the colour.
It is also independent of the luminance.
The colours that can be reproduced by any set of three display primaries all lie within the
triangle formed by linking the points representing the colours of the individual primaries.
CIE Colour Chart Controls
When the CIE Colour Chart tile is selected, a range of display
functions are provided in the CIE Colour Chart control panel
at the right of the screen.
Line Mode selects between displaying the waveform of a
single line (picked out by the crosshair cursor) or multiple
lines.
Filter
selects how the displayed data samples are filtered.
Luma Mask limits the displayed colours to those with a
specific range of luminance values.
Visualization controls how the waveform is displayed.
Graticule
when enabled (1) displays the graticule.
Source when enabled (I) displays the source colour space
triangle.
Black body when enabled (I) display the 'black body curve.