Eye closure recognition system and method

摘要

A system (30) and method (100) are provided for determining eye closure state of the eye (22) of a subject. The system (30) includes a video imaging camera (24) oriented to generate images of an eye (22) of a subject and a video processor (32) for processing the images generated with the video imaging camera (24). The video processor (32) is configured to detect an eye (22) in the video images and determine whether the images of the eye (22) are noisy. The video processor (32) processes geometrical and statistical shape of the eye (22) in the images if the eye (22) is not noisy, and processes changes in the size of the eye (22) over time if the images are noisy. The processor (32) further determines eye closure state based on a ratio of horizontal to vertical dimensions (X/Y).