Abstract: A method for calibrating a camera of a vehicle is provided. The method comprises: generating a camera calibration matrix comprising a first, a second and a third column, wherein the first column of the camera calibration matrix is obtained based on the obtained focus of expansion points, the third column of the camera calibration matrix is obtained based on the obtained plane normal vectors and a second column of the camera calibration matrix corresponding to the cross-product of the first and the third column of the camera calibration matrix is obtained. Then, the camera is calibrated using the obtained camera calibration matrix.

Abstract: Detection devices (1) for controlling storage devices (20) for receiving and storing video signals for a plurality of subscribers are provided with memories (2, 3) for storing subscriber's profiles and detectors (4, 5) for detecting video signals comprising content according to the subscriber's profiles. Indication transmitters (6, 7) transmit indications with respect to the video signal to indication receivers (26, 27) of the storage devices (20) for in response to receptions of the indications storing the video signals or to indication receivers (71) of subscriber devices (70) for in response to receptions of the indications informing the subscribers. Switches (8, 9) activate/deactivate the detection devices (1) in response to un-availabilities/availabilities of the subscribers to check the video signal.

Abstract: Detection devices (1) for controlling storage devices (20) for receiving and storing video signals for a plurality of subscribers are provided with memories (2, 3) for storing subscriber's profiles and detectors (4, 5) for detecting video signals comprising content according to the subscriber's profiles. Indication transmitters (6, 7) transmit indications with respect to the video signal to indication receivers (26, 27) of the storage devices (20) for in response to receptions of the indications storing the video signals or to indication receivers (71) of subscriber devices (70) for in response to receptions of the indications informing the subscribers. Switches (8, 9) activate/deactivate the detection devices (1) in response to un-availabilities/availabilities of the subscribers to check the video signal.