To get usb_cam to work with darknet_ros

usb_cam-test.launch

<launch>
  <node name="usb_cam" pkg="usb_cam" type="usb_cam_node" output="screen" >
    <param name="video_device" value="/dev/video1" />
    <param name="image_width" value="640" />
    <param name="image_height" value="480" />
    <param name="pixel_format" value="yuyv" />
    <param name="camera_frame_id" value="camera/rgb" />
    <param name="io_method" value="mmap"/>
    <remap from="/usb_cam/image_raw" to="/camera/rgb/image_raw"/>
  </node>
  <!--node name="image_view" pkg="image_view" type="image_view" respawn="true" output="screen">
    <remap from="image" to="/usb_camera/image_raw"/>
    <param name="autosize" value="true" />
  </node-->
</launch>

@Francisco-Ibarra07