how to set up realsense_camera?
Recently, I try to set up realsense_camera. But I get the following error,
:~$ sudo apt-get install ros-melodic-librealsense ros-melodic-realsense-camera
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ros-melodic-librealsense
E: Unable to locate package ros-melodic-realsense-camera
Kindly help me.... thanks in advance