camera model sdf file not found

[Tung1213]

I'm following the rmf_human_detector package to compile. It succeeds when using colon build to compile. But I run the .py file to detect the presence of the person, I got the error.

the error:
ERROR] [launch]: Caught exception in launch (see debug for traceback): "package 'image_proc' not found, searching:

the error says I have no camera node to use, But I go to the rmf_demos_assests package to find camera sdf file. I can't find it.
I wonder know guys how to use the camera. Thanks.

[enfff]

According to the README, you can find a model.sdf of the camera in the folder rmf_demos_assets of the rmf_demos repository. However, there's none.

What I did instead was to add it manually into my world file

<sdf>
  <world>

    <model name="camera_model">
      <pose>0.25 -12.8 2 0 0.15 0</pose>
      <link name="camera_link">
        <!-- Visual representation of the camera -->
        <visual name="camera_visual">
          <pose>0 0 0 0 0 0</pose>
          <geometry>
            <box>
              <size>0.05 0.05 0.05</size>
            </box>
          </geometry>
          <material>
            <ambient>0.3 0.3 0.3 1</ambient>
            <diffuse>0.7 0.7 0.7 1</diffuse>
            <specular>1 1 1 1</specular>
          </material>
        </visual>
        <!-- Camera sensor -->
        <sensor name="camera_sensor" type="camera">
          <pose>0 0 0 0 0 0</pose>
          <always_on>true</always_on>
          <visualize>true</visualize>
          <update_rate>30</update_rate>
          <topic>camera/image_raw</topic>
          <gz_frame_id>camera_link</gz_frame_id>
          <camera>
            <horizontal_fov>1.047</horizontal_fov>
            <image>
              <width>640</width>
              <height>480</height>
              <format>R8G8B8</format>
            </image>
            <clip>
              <near>0.1</near>
              <far>100</far>
            </clip>
          </camera>
        </sensor>
      </link>
      <static>true</static>
    </model>

  <world>
<sdf>

which, in this case, writes the raw images in the topic /camera/image_raw. Then you should be adding a ros-gazebo bridge to be able to visualize the camera:

  <node
    pkg="ros_gz_bridge"
    exec="parameter_bridge"
    name="bridge_camera"
    output="screen"
    args="/camera/image_raw@sensor_msgs/msg/Image@gz.msgs.Image">
    <param name="use_sim_time" value="true"/>
  </node>