Method and device for dating camera images

A device for dating images obtained by at least one camera equipping a vehicle, comprising:

• means configured to transmit a reference signal including time information,
• an electronic card connected to the means for transmitting the reference signal and configured to generate a modulated signal in response to the reference signal, said modulated signal having at least one retiming pulse having a retiming period (ΔT) which is different from a base period of the modulated signal,
• wherein each camera is connected to the electronic card and is configured to acquire images at a frequency depending on the frequency of the modulated signal, each image being associated with a timestamp provided by the camera, and
• said device further comprising a computer connected, on the one hand, to each camera and, on the other hand, to the means for transmitting the reference signal and configured to determine a time difference between the timestamps of two successive images of the camera and, if the time difference determined between said timestamps is different from the base period of the modulated signal, assigning a reference date to said images depending on the time information of the reference signal.