[Install RealSense package]
카메라가 올바르게 연결되어 있는지 확인
$ lsusb
Realsense viewer 실행
$ realsense-viewer
카메라를 킬 수 있는 launch file을 group화 하여 각각 틀어주는 새로운 launch file을 생성
<launch>
<group ns="camera1">
<include file="$(find realsense2_camera)/launch/rs_camera.launch">
<arg name="serial_no" default="046322250705"/>
</include>
</group>
<group ns="camera2">
<include file="$(find realsense2_camera)/launch/rs_camera.launch">
<arg name="serial_no" default="117222250987"/>
</include>
</group>
</launch>