EyeLink II Scene Camera User Manual
©
2004-2007 SR Research Ltd.
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button is enabled. In the “Detect Display Area” dialog box, press the “Detect”
button to let the video card detect the display area (the gray box). If the
detection is successful, two red/pink reference boxes are added onto the display
and the detected area is reported in a message similar to “Detect OK. Display
at 24 8 698 465” (see Figure 4-5). Press the “Reset” button to clear the current
settings and redo display area detection or press the “Finish” button to exit this
mode.
Figure
4-4. Beginning Display Area Detection
In the “Detect Display Area” dialog box, if the red reference boxes do not appear,
the user may need to adjust the values of the “Vertical” and “Horizontal”
brightness threshold downwards by 10%, and then click on the “Detect” button
again. Repeat this step until the reference pattern appears on the screen.
Please make sure the gray background is displayed all the time; otherwise,
please check for the “Video Ref Pattern” button setting on the host PC. The
default threshold settings work for most of recent video cards. If not, please
first check whether you have zoomed in the host PC video output by pressing
button 5 of the overlay box remote control (note the size of the gray box relative
to the “Detect Display Area” dialog box). However, if the reference pattern is not
displayed even when the vertical and horizontal thresholds are adjusted close to
0, please contact SR Research Ltd.
