Vehicle occupant protection system

A vehicle occupant protection system comprising:

• an imaging device configured to capture an image of an occupant riding in a vehicle;
• an occupant monitoring apparatus configured to monitor the occupant on a basis of the captured image outputted from the imaging device, and configured to, in a case where a riding state of the occupant in the vehicle is undeterminable on the basis of the captured image outputted from the imaging device, switch an imaging range of the captured image to be outputted from the imaging device, wherein
• the occupant monitoring apparatus is configured to, in a case where the riding state of the occupant in the vehicle is undeterminable on a basis of a first captured image that is outputted from the imaging device upon prediction of collision of the vehicle, switch the captured image to be outputted from the imaging device, by causing the imaging device to image a second imaging range narrower than a first imaging range of the first captured image;
• and
• an occupant protection apparatus configured to execute, on a basis of the monitoring by the occupant monitoring apparatus, protection control that is based on the occupant riding in the vehicle.