Task2/sign_recognition/launch/sign_recognition.launch

<launch>
  <arg name="start_camera" default="false"/>
  <arg name="enabled" default="false"/>
  <arg name="debug_save" default="false"/>
  <include if="$(arg start_camera)" file="$(find usb_cam)/launch/usb_cam-test.launch"/>
  <node pkg="sign_recognition" type="sign_recognition_node.py"
        name="sign_recognition_node" output="screen">
    <param name="enabled" value="$(arg enabled)"/>
    <param name="debug_save" value="$(arg debug_save)"/>
  </node>
</launch>