Blink Detection
===============

.. doxygenfunction:: Trueface::SDK::detectBlink

.. doxygenfunction:: Trueface::SDK::detectBlinks

.. doxygenstruct:: Trueface::BlinkState
   :members:

To reduce False Positives, blink detection must be run with several constraints:

- Ensure the face is frontal facing
- The face should be 1 - 3 ft from the camera
- Recommended 640 x 480 resolution or better
- Ensure there is good lighting illuminating the eyes

These constraints are not enforced by the method, and should be enforced by called of SDK for best results.

.. image:: ../../shared/images/blink_detection_distance.png
   :width: 400pt

.. image:: ../../shared/images/blink_detection_lighting.png
   :width: 400pt