Blink detection in cabin using dynamic vision sensor

An eye blink detection method based on a DVS camera, comprising:

• photographing a face using the DVS camera to obtain a stream of DVS pixels;
• integrating DVS pixels of the stream of DVS pixels to form a plurality of DVS frames, wherein each DVS frame of the plurality of DVS frames comprises a plurality of first color pixels and a plurality of second color pixels, each of the first color pixels being associated with one or more DVS pixels indicating a brightening event and each of the second color pixels being associated with one or more DVS pixels indicating a darkening event;
• and
• determining whether there exists an eye blink action in at least one DVS frame of the plurality of DVS frames, wherein the step of determining whether there exists an eye blink action comprises:
• determining whether there exists a pattern in which a first color region and a second color region are distributed one above the other in an eye region of the at least one DVS frame,
• wherein the step of determining whether there exists an eye blink action further comprises:
• calculating an average height difference value for each DVS frame of the at least one DVS frame, wherein the average height difference value is an average height difference value between first color pixels and second color pixels in the eye region of the at least one DVS frame;
• and
• determining, when an absolute value of the average height difference value is greater than a threshold value, that there exists a pattern in which a first color region and a second color region are distributed one above the other in the eye region of the at least one DVS frame.