launch stereo_image_proc and image topic names

edit

Hello all;

I have a bag with stereo images topics and I am trying now to create a launch for stereo_image_proc. The topics I have to perform stereo are:

/cameras_pan_tilt/left/camera_info         
/cameras_pan_tilt/left/image                    
/cameras_pan_tilt/right/camera_info        
 /cameras_pan_tilt/right/image

The namespace is obviously "cameras_pan_tilt", but the images do not have the default name "image_raw". I am trying to create a simple launch to adjust parameters, but I have the following problems:

1.- the images in image view, are not displayed.

2.- I do not for sure if the remapping is correct for stereo_image_proc to process everything.

The launch is as follows, following tutorials:

<launch>    
        <node ns="cameras_pan_tilt" pkg="stereo_image_proc" type="stereo_image_proc" name="stereo_image_proc" output="screen">
            <remap from="left/image" to="left/image_raw"/>
            <remap from="right/image" to="right/image_raw"/>
        </node>

        <node pkg="image_view" type="stereo_view" name="stereo_view">
            <remap from="cameras_pan_tilt" to="stereo"/>
            <remap from="image_rect" to="image"/>
        </node>

        <node pkg="rqt_reconfigure" type="rqt_reconfigure" name="rqt_reconfigure"/>
</launch>

I receive also the following warnings:

[ WARN] [1440760099.284773259]: The input topic '/cameras_pan_tilt/left/image_raw' is not yet advertised
[ WARN] [1440760099.284920490]: The input topic '/cameras_pan_tilt/right/image_raw' is not yet advertised
[ WARN] [1440760159.286287583]: The input topic '/cameras_pan_tilt/left/image_raw' is not yet advertised

Could anyone please help me with this issue, to launch stereo_image_proc from a launch to reconfigure? Thank you all very much in advance,

Best regards,

Alberto

EDIT:

After changing the fields "from" and "to" in the remap fields in the launch file, that error has disappeared, but I still see no images with image view, and in addition I have new error. Any possible clue?

[ WARN] [1441003721.212940511]: [image_transport] Topics '/cameras_pan_tilt/left/image_mono' and '/cameras_pan_tilt/left/camera_info' do not appear to be synchronized. In the last 10s:
    Image messages received:      15
    CameraInfo messages received: 50
    Synchronized pairs:           0