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4 MANUAL CONTROLS FOR EYEGAZE
NOTE: In Section 5, “you” is understood to be the person assisting the user.
The keyboard is used mostly for editing programs or for client vvaluations.
4.1
ESC (Escape)
From the Main Menu, touching the words “Main Menu” at the top of the screen will escape back to the
desktop.
4.2
Function Key Manual Controls
In the Eyegaze programs, the Function Keys on the manual keyboard have specific Eyegaze functions.
The functions are labeled on the keyboard.
Note: new keyboards require you to press the” fn” key along with the function key in order to
make a selection
.
F1
Re-Calibrate
Pressing the F1 function key from an Eyegaze menu screen causes the System to return to the
calibration procedure. Manually using the F1 key has exactly the same effect as visually pressing the
“Re-calibrate” key from the Main Menu. After the re-calibration procedure is complete, the Eyegaze
System returns to the same screen from which the F1 key was pressed.
F2
Skip Calibration Point
Pressing the F2 function key during the calibration procedure causes the calibration program to skip the
present point. Pressing F2 is particularly useful if the System does not respond when the user looks
down at the camera to begin the calibration procedure.
F3
Accept Calibration
If the user did not get a sufficiently accurate calibration to be accepted automatically, (.25 inches
[.63cm] or less) you can manually accept the calibration by pressing the F3 function key. It can be
pressed during the calibration point re-takes or while the screen displays its message to restart the
calibration. The Eyegaze Edge then accepts that calibration and moves into the Main Menu. Using the
F3 key enables users with limited eye control to get into the Eyegaze Edge. Using the “looser”
calibration, however, decreases the accuracy of the System’s response, and will make programs with
smaller keys, such as the Keyboard program, difficult of the user to operate. (See Section 1.3.14
“Accepting Calibrations.”)
F4
Retrieve Saved Calibration
The F4 function key can be pressed at the beginning of the calibration procedure to recall the
calibration that was previously saved. The F4 key, in combination with the F5 key (Save Calibration),
makes it possible to bring back a stored calibration for use. Remember, however, that
the camera
angle and focus right must be adjusted to match the position and focus setting used when the
calibration was originally saved.
For more information on setting the focus right and camera position,
see Section 1.3.16 “Saving a Calibration for Later Retrieval.”
F5
Save Calibration
Pressing the F5 function key during the operation of any Eyegaze program saves the current calibration
for later recall. As discussed in Section 1.3.16 “Saving a Calibration for Later Retrieval,” it is necessary
when saving a calibration to note the camera angle and focus setting so these can be restored when