Dear All

I have a question and would like to know if anybody has any idea or done the camera IMU synchronization.

It means that I want to find the exact time lag between the ROS time of the camera and the IMU time.

I have found this link as one way of doing that but it requires the pan tilt attached to the camera it is not clear what is the red LED is doing and how they detect that in image. http://www.ros.org/wiki/camera_calibration/calibration_notes/Timing