Ideal distance from camera is approx 1.5 to 2 feet
First frame shows the head tracking results. If the area detected is much larger than actual head, may need to refresh page.
Second frame shows the area we are detecting. This adjusts when the head has moved a certain amount
Third frame shows the motion being picked up for detection
When a blink is detected, boxes are overlayed over the 2nd and 3rd frames. A green box is considered valid and a red box is determined to be a false positive.
If blinks are not being detected, try moving head slowly side to side or forward backward and retrying
Development Controls
eyeDiffTolerance: Adjust the allowed difference for the 2 eye detection boxes. Lower number shows more false positives.
tolerance: Adjust the motion tolerance. The lower the number, the more sensitive to movement.
recalibrationTolerance: Adjust the amount of head movement needed to trigger a refresh of the area we are checking against.
playSound: audio feedback for when blinks are detected