Eyelid dysfunction results in symptoms of ptosis and eyelid retraction. Indicators of eyelid function include the corneal reflection distance at the eyelid margin and eyelid fissure (PF). There is currently no system in Japan that automatically measures the PF, which is a comprehensive measure of eyelid function. We devised a method to measure PF automatically from frontal images using ArUco markers and facial landmark estimation, and developed an implementation of the method using OpenCV and dlib. The system was shown to be significantly smaller than the digital calipers.

中文翻译：

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睑裂长度自动测量方法与实现系统的开发与评估

眼睑功能障碍会导致上睑下垂和眼睑缩回的症状。眼睑功能的指标包括眼睑边缘的角膜反射距离和眼睑裂痕（PF）。日本目前没有自动测量PF的系统，它是对眼睑功能的全面测量。我们设计了一种使用ArUco标记和面部标志估计从额叶图像自动测量PF的方法，并开发了使用OpenCV和dlib的方法的实现。事实证明，该系统比数字卡尺小得多。