72‐4: Software and Hardware Implementation of DMS Based on Infrared Camera Behind the LCD

Driver monitor system (DMS) is an essential configuration for safe driving. In order to miniaturize the car frame and maximize the interior space, we integrated the infrared camera behind the liquid crystal display (LCD). Unlike typical blind hole screens, we adopted a full‐screen design with the same pixel architecture throughout Its backlight has no light‐transmitting holes and is a complete infrared high‐transmittance film When the infrared transmittance of the LCD full screen is 30%, the camera can receive a blurred image with contours. To solve the problem of image blurriness, we consider the LCD full screen as composed of thin films of different media The image becomes increasingly blurred with each layer of film. One layer of film is similar to a layer of fog. After layer‐by‐layer guided filtering and de‐fogging, the image becomes clear. After multi‐layer defogging, the facial recognition ratio (FRR) has increased by nearly 60% compared to before In addition, we propose two parameters representing abnormal head states based on two‐dimensional facial images: HTR and HTG, which can sensitively reflect head turning and tilting actions.