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try the Qt GUI plugin version of image_view.

If you're using hydro:

sudo apt-get install ros-hydro-rqt-image-view

otherwise, don't forget to replace the hydro with the ros distro you're using.

Then run the executable node:

rosrun rqt_image_view rqt_image_view

At the top left corner, you can search for the image topic to listen.

For more details: rqt_image_view

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