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You are not rectifying the images, since you missed the namespace "stereo". Add

ns="stereo"

to your stereo image proc like:

<node name="stereo_image_proc" pkg="stereo_image_proc" type="stereo_image_proc" output="screen" ns="stereo">

You are not rectifying the images, since you missed the namespace "stereo". Add Hi!

ns="stereo"

you are mixing namespaces... remove the remappings, and in the cameras publish to /left/image_raw and /right/image_raw (without the "/stereo"!) because you grouped everything inside a namespace.

Right now, cameras are publishing at /stereo/stereo/left_or_right/image_raw and stereo_image_proc expects them to your stereo image proc like:be at /stereo/left_or_right/image_raw...

<node name="stereo_image_proc" pkg="stereo_image_proc" type="stereo_image_proc" output="screen" ns="stereo">

Hi!

you are mixing namespaces... remove the remappings, remappings at the end of your launchfile, and in the cameras publish to /left/image_raw and /right/image_raw (without the "/stereo"!) because you grouped everything inside a namespace.

Right now, cameras are publishing at /stereo/stereo/left_or_right/image_raw and stereo_image_proc expects them to be at /stereo/left_or_right/image_raw...