CHEETAH 3G-SDI Camera
November 16, 2017
Page
38
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Rev 1.1
3.10.2 Overlays
Superimposed mode allows you to overlay patterns on live video. The Output
Control screen provides several options:
Crosshair
. Selecting the Crosshair check box displays a single crosshair centered
in the middle of the image. You can adjust the brightness of the crosshair to
improve its visibility on top of the images.
Figure 30: Use the slider to brighten or darken the crosshair.
SMPTE
. Selecting the SMPTE check box displays the SMPTE color bar test
pattern.
X & Y Lines
. Selecting the X & Y Lines check box superimposes a pair of horizontal
and vertical lines on the image. You can enable the lines in horizontal direction,
vertical direction, or both directions. You can position the lines at any pixel or
line in the image.
Figure 31: Line spacing to measure pixel/line positions.
Since the spacing between parallel lines can serve as a measuring tool, the
software references the pixel and line pos
itions to the image sensor’s
pixels and
lines, not to the image pixels and lines.
The spacing between the lines can appear in either pixels or metrical units. When
using the lines as a measuring tool, you can apply a scale coefficient and calculate
the spacing in linear measuring units (micrometers, millimeters, or meters).
