A system for cutting masks for protecting a portion of a vehicle, which includes: - a machine (MAC) for cutting masks in a sheet material, the machine including a movable tool for cutting the sheet material; - a data processing unit (PRO) connected to the cutting machine and arranged to control the relative displacement of the cutting tool and the sheet material; - a database (BDM) of mask contours, which is associated to the data processing unit; - a display unit (AFF) and a data input unit (INT) coupled to the data processing unit (PRO); the system being characterized in that it further includes: - a second database (BDR) containing, for several vehicles, several representations of each vehicle from several distinct angles of view, this second database being associated to the data processing unit; - a unit (CAF) for controlling the display unit which is coupled - in particular integrated - to the data processing unit and which is arranged, in particular programmed, to: • extract from the second database the representations (REP1 to REP5) from several angles of view of a vehicle, as a function of at least one vehicle selection datum input into the data processing unit (PRO) via the data input unit (INT); • modify the representations from several distinct angles of the selected vehicle, as a function of at least one mask selection datum input into the data processing unit via the data input unit; and • control the display, substantially simultaneous display, on the display unit (AFF), of the modified representations of the selected vehicle. - a machine (MAC) for cutting masks in a sheet material, the machine including a movable tool for cutting the sheet material; - a data processing unit (PRO) connected to the cutting machine and arranged to control the relative displacement of the cutting tool and the sheet material; - a database (BDM) of mask contours, which is associated to the data processing unit; - a display unit (AFF) and a data input unit (INT) coupled to the data processing unit (PRO); - a second database (BDR) containing, for several vehicles, several representations of each vehicle from several distinct angles of view, this second database being associated to the data processing unit; - a unit (CAF) for controlling the display unit which is coupled - in particular integrated - to the data processing unit and which is arranged, in particular programmed, to: • extract from the second database the representations (REP1 to REP5) from several angles of view of a vehicle, as a function of at least one vehicle selection datum input into the data processing unit (PRO) via the data input unit (INT); • modify the representations from several distinct angles of the selected vehicle, as a function of at least one mask selection datum input into the data processing unit via the data input unit; and • control the display, substantially simultaneous display, on the display unit (AFF), of the modified representations of the selected vehicle. • extract from the second database the representations (REP1 to REP5) from several angles of view of a vehicle, as a function of at least one vehicle selection datum input into the data processing unit (PRO) via the data input unit (INT); • modify the representations from several distinct angles of the selected vehicle, as a function of at least one mask selection datum input into the data processing unit via the data input unit; and • control the display, substantially simultaneous display, on the display unit (AFF), of the modified representations of the selected vehicle. <EOS>