Calibration Screen; Figure 2-4: Example Calibration Screen - SR Research EyeLink Portable Duo User Manual

2.4.2 Calibration Screen

Figure 2-4: Example Calibration Screen

2.4.2.1 Calibration Screen Purpose
Calibration is used to collect gaze position samples when targets are being
presented at known points in order to map raw eye data to either gaze position
or HREF data. Targets are serially presented by the Display PC during
calibration. The participant should fixate each target while samples are
collected by the Host PC for that target. During this time, feedback graphics are
presented on the Host PC display to aid the experimenter/operator in the
process. The calibration is automatically checked when finished, and feedback
about the quality of the calibration is provided. Calibration should be performed
after camera setup and before validation. Validation provides the experimenter
with information about calibration accuracy/the quality of the calibration
model.
As in the Setup screen, the bottom of the Calibration/Validation/Drift Correct
screens displays the thumbnail camera images. The panels on the left show the
view of the target sticker (in the Remote mode only), and the map view of the
eyes and target sticker in the global camera image. Camera adjustment is
EyeLink Portable Duo Host Software 27
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