Extract rectified images from bag file with image_raw

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I have a bag file with the topics image_raw and camera_info from different cameras. By the time I recorded I had not calibrated the cameras. I have now calibrated the cameras and want to save a rectified image. The topics in the bag file are /prosilica_2450/image_raw and /prosilica_2450/camera_info.

Question: What changes do I need in the launch file to be able to save a rectified image?

I have the following launch file:

  <launch>
       <arg name="directory"  />
        <node pkg="rosbag" type="play" name="rosbag" args="--rate=1 -d 2 $(arg directory)/logall_0.bag"/>

    <node name="p2450_image_proc" pkg="image_proc" type="image_proc" >
    <remap from="image_raw" to="/prosilica_2450/image_raw"/>  
    <remap from="camera_info" to="/prosilica_2450/camera_info"/>  
    <param name="camera_info_file" value="/home/Sandbox/CameraInfoFiles/prosilica5555.yaml"/> 
    </node>

    <node name="p2450_save" pkg="image_view" type="extract_images" respawn="false" output="screen" cwd="node">
    <remap from="image" to="/image_rect"/>  
    <param name="filename_format" value="$(arg directory)/Pros2450/Pros2450_%05i.png"/> 
    </node>
    </launch>