VEHICULAR DRIVER MONITORING SYSTEM WITH CAMERA AT INTERIOR MIRROR ASSEMBLY

A vehicular cabin monitoring system includes an interior rearview mirror assembly having a mirror head adjustable relative to a mounting structure. A camera is accommodated by and moves with the mirror head when the mirror head is adjusted. A first subset of image data captured by the camera is processed for monitoring the driver of the vehicle. A spectrally reflecting mirror element is disposed within the interior cabin and spaced from the rearview mirror. The mirror element spectrally reflects light toward the camera that is representative of an obstructed region within the interior cabin not directly viewable by the camera. The mirror element is disposed at an accessory module of the vehicle. A second subset of image data is representative of light reflected from the mirror element. The cabin monitoring system determines presence of an object within the obstructed region based on processing of the second subset of image data.