Modified subscribers not to use the synchronizer message filter. Instead,
depth images are stored as they are received, and image processing of the
color image will proceed with the most recent depth image received, if any.
Fixed code to work properly if no depth images are published. Also removed
synchronization on the camera info topics, since there was no reason to
process both camera info objects at the same time.
Modified subscribers not to use the synchronizer message filter. Instead, depth images are stored as they are received, and image processing of the color image will proceed with the most recent depth image received, if any. Fixed code to work properly if no depth images are published. Also removed synchronization on the camera info topics, since there was no reason to process both camera info objects at the same time.