US Patent 9984354 Camera time synchronization system

Systems involving a plurality of cameras with clocks may not remain time synchronized during operation. Described in this disclosure are techniques for synchronizing one or more of the clocks of a plurality of cameras or the images produced by the plurality of cameras. In one implementation, a timestamp projector produces an optical timestamp encoding data indicative of timing. One or more cameras may acquire images of a scene that include the optical timestamp. The images may be processed to recover the data indicative of timing. This data may be used to set the clock of the camera, set timestamps associated with the images for subsequent use, and so forth.