Vehicle safety system and operating method thereof

A vehicle safety system comprising:

• a light source configured to emit light toward an eyeball to generate a glint on the eyeball;
• a sensing unit configured to capture an image frame containing a glint image of the glint;
• a processing unit configured to
• determine an eyeball image range taking the glint image in the image frame as a center of the eyeball image range, which is a range in the image frame smaller than the image frame,
• calculate a pupil position according to a spatial relationship between the glint image and a pupil image in the eyeball image range, and
• generate a drive signal corresponding to the pupil position accordingly;
• and
• a control unit configured to trigger a vehicle device associated with the pupil position according to the drive signal.

An operating method of a vehicle safety system comprising:

• capturing an image frame containing an eyeball image of an eyeball;
• dividing the eyeball image into at least two sub-regions each corresponding to one of different functions, wherein each of the different functions controls one vehicle device;
• calculating, by a processing unit, a pupil position of the eyeball image in the image frame,
• generating a drive signal corresponding to one of the at least two sub-regions in which the pupil position locates;
• and
• triggering the vehicle device associated with the one of the at least two sub-regions in which the pupil position locates according to the drive signal.