Method and device for detecting changes in eye status

A device for detecting changes in eye status, comprising:

• one or more processors;
• and
• one or more computer storage media for storing one or more computer-readable instructions, wherein the processor is configured to drive the computer storage media to execute the following tasks:
• receiving multiple consecutive facial images generated by a photography device photographing a person's face, wherein each facial image includes an eye region;
• obtaining a partial image including the eye region from each of the facial images;
• obtaining an eye contour area based on the partial image;
• obtaining standard deviations of eye contour heights based on the eye contour area;
• using a smoothing window to sequentially perform a smoothing process on the standard deviations of eye contour heights corresponding to the multiple consecutive facial images to obtain average values of the standard deviations of eye contour heights;
• and
• determining a change in the eye status of eyes within a time interval based on the standard deviations of all eye contour heights within the time interval,
• wherein, in determining the change in the eye status of eyes within the time interval, the processor further executes the following tasks:
• determining that the change in the eye status of eyes within the time interval is from the eye-closed status to an eye-open status when the average values of the standard deviations of eye contour heights in the time interval continue to increase;
• and
• determining that the change in the eye status of eyes within the time interval is from the eye-open status to an eye-closed status when the average values of the standard deviations of eye contour heights in the time interval continue to decrease.