Patent ID: 7574315

Claim:
A device for determining at least one calibration parameter of at least one image sensor, comprising: the at least one image sensor, which is configured to monitor a scene of a passenger compartment of a motor vehicle in which at least a portion of the scene remains static over time; and at least one processing unit configured to detect a decalibration of the at least one image sensor in the operation of the at least one image sensor, as a function of image signals, and to, upon detecting the decalibration, at least one of report the decalibration to at least one of a subsequent system and the driver, and determine the at least one calibration parameter as a function of the image signals; wherein the at least one image sensor derives the image signals at least from at least one invariant pattern in an image coverage range of the at least one image sensor, wherein the at least one invariant pattern is formed by at least one reference object applied in the scene for determining the at least one calibration parameter, and wherein the at least one reference object is applied to at least one object of the scene that is relevant with respect to a monitoring function of the at least one image sensor, wherein the at least one reference object is applied to at least one of at least one air bag flap, at least one air bag, and at least one steering wheel in the passenger compartment of the motor vehicle.