Arrangement and method for controlling an occupant protection system in a vehicle which protects an occupant of a vehicular compartment during a crash involving the vehicle includes a first sensor system for obtaining information about the occupant, a second sensor system for determining a position of the occupant or a part thereof which enables a determination of the position of the occupant relative to the occupant protection system, and a processor coupled to the first and second sensor systems for controlling deployment of the occupant protection system based on the information about the occupant obtained by the first sensor system and the position of the occupant determined by the second sensor system. The first sensor system may include one or more optical imaging devices which obtain images of an area of the compartment occupied by the occupant, the information about the occupant being obtained by analysis of the images.