depth_image_proc subscriber

edit

I am trying to use the depth_image_proc node and am unsure how to connect it to my network. I have no experience with a nodelet and cannot seem to remap the topics correctly. Below is my output rqt_graph.

I wish to connect to topics published from the matlab global node and cannot subscribe correctly.

Here is my launch file:

<launch>
    <group ns="cloud_gen">
<!-- This launch file uses the depth_image_proc node to transform a color image and a depth image
    into an xyzrgb point cloud for use with the Navigation Stack -->

<!-- This file is to be used with the Intel Realsense node rs_rgbd.launch and the MATLAB code titles
     realsense_lane_detect.m outputting the processed images-->

         <arg name="rgb_camera_info"     value="/camera/color/camera_info"/>
         <arg name="rgb_rimg_ect"        value="/processed_color"/>  <!--Rectified color image-->
         <arg name="depReg_imgrect"      value="/processed_depth"/>  <!--Rectified depth image-->
         <arg name="out_cloud"           value="/white_lines"/>

        <!-- Nodelet manager for this pipeline -->
        <node pkg="nodelet" type="nodelet" args="manager"
            name="standalone_nodelet" output="screen"/>

        <!-- Construct point cloud of the rgb and depth topics -->
        <node pkg="nodelet" type="nodelet" name="depth_image_proc"
            args="load depth_image_proc/point_cloud_xyzrgb standalone_nodelet" output="screen">
            <remap from="rgb/camera_info"               to="/camera/color/camera_info" />
            <remap from="rgb/image_rect_color"          to="$(arg rgb_rimg_ect)"/>
            <remap from="depth_registered/image_rect"   to="$(arg depReg_imgrect)"/>
            <remap from="depth_registered/points"       to="$(arg out_cloud)"/>
        </node>
    </group>
</launch>

Any help is appreciated!

Edit 1: Below is the output of rosnode info on that MATLAB node.

rosnode info /matlab_global_node_59233 
    --------------------------------------------------------------------------------
    Node [/matlab_global_node_59233]
    Publications: 
     * /processed_color [sensor_msgs/Image]
     * /processed_depth [sensor_msgs/Image]
     * /rosout [rosgraph_msgs/Log]

    Subscriptions: 
     * /camera/depth_registered/points [sensor_msgs/PointCloud2]

    Services: None


    contacting node http://whitelines:42372/ ...
    Pid: 21599
    Connections:
     * topic: /rosout
        * to: /rosout
        * direction: outbound
        * transport: TCPROS
     * topic: /camera/depth_registered/points
        * to: /camera/realsense2_camera_manager (http://whitelines:44751/)
        * direction: inbound
        * transport: TCPROS