Put The Mount Into Position And Find The Eye; Figure 7-9: Pointing The Camera - A Visible Illumination Boundary Indicating Poor Lighting Of The Left Portion Of The Camera's View (Left) And A Fully Illuminated Target Indicating Intense And Uniform Illumination (Right) - SR Research EyeLink 1000 Installation Manual

Figure 7-9: Pointing the Camera – a visible illumination
boundary indicating poor lighting of the left portion of the
camera's view (left) and a fully illuminated target indicating
7) Align the Illuminator and Camera. The boundaries of the illumination will show with
distinctly different threshold coloring in the illuminated versus non-illuminated
locations. The amount of threshold coloring displayed on the global view can be
adjusted up or down by pressing the UP and DOWN arrow keys on either the Host
or Display PC keyboards. You can also toggle the threshold coloring on and off using
the "Threshold Coloring" button on the Host PC's Camera Setup screen.
The left side of Figure 7-9 illustrates the boundary of illumination in the global
camera view – the illuminator would need to be shifted (in this case, leftwards), so
that the entire target is illuminated as in the right side of Figure 7-9.
Adjust the horizontal and vertical placement of the Illumninator as follows:
While monitoring the global camera view, adjust the illuminator's tilt up and
down by rotating the clip around the Mounting Bar so that the Target Screen
is brightly illuminated and the bulk of the illumination appears in the center
of the Screen on the vertical – tighten the knob holding the illuminator to the
Mounting Bar to secure the position. The brightly illuminated region will be
grayscale, while the region in the infrared dark will be threshold colored.
By swiveling the illuminator around the thumbscrew, adjust the angle of the
illuminator on the horizontal plane so that the entire Target Screen is
brightly illuminated.
7.7.4

Put the Mount into Position and Find the Eye

8) Place the Mount at the intended distance and position. For eye tracking purposes, the
mount should be raised as high as possible in order to maximize the vertical eye
tracking range without blocking the subject's view of the bottom part of the display.
An unoccluded line of sight from the eye to both illuminator and Camera Head is
crucial for optimal eye tracking.
9) Check the Orientation of the Camera Image. If the camera image is vertically flipped,
this can be corrected by pressing the
intense and uniform illumination (right)
button to the right of the global camera
Long Range Mount Installation
2005-2010 SR Research Ltd.
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