Launch files to open an OpenNI2 device and load all nodelets to convert raw depth/RGB/IR streams to depth images, disparity images, and (registered) point clouds.
device_id might look like an integer. in that case, getParam()
doesn't want to parse the param as a string for some reason (not
sure if this is by design).
device_id might look like an integer. in that case, getParam() doesn't want to parse the param as a string for some reason (not sure if this is by design).
This patch works around that issue.